OT: Re: Any thoughts on what might cause this? - Update

2012-12-20 Thread John Sessoms

Just a note if anyone is curious ...

I followed up on Mark's suggestion that the video card may be causing 
the freeze-up.


I found a new AGP GEForce 6200 card at the local CompUSA store.

I know some of y'all don't like CompUSA/Tiger Direct, but it's a local 
store for me so anything I buy there I don't have the aggravation of 
keeping track of how much I spent so I can figure out North Carolina's 
stupid $#%@*# internet tax when I do my taxes next year. (Interesting 
... spell-check doesn't like AGP or GEForce, but has no problem with 
$#%@*# ??)


Anyway ...

Checking the system requirements listed on the box, I learned I need a 
300W power supply with 18Amp available on the +12vdc rail to use this card.


I don't remember what the last power supply I installed is rated at, so 
before I actually buy the new video card, I'm going to have to shut 
everything down  get inside the case again to find out if I'm going to 
have to install a new power supply before I can replace the video card.


Don't have a lot of enthusiasm for that at the moment. I know I'll have 
to do it anyway when I replace the video card, but I'm not looking 
forward to doing it twice.


On a positive note though ... because of the attention I've been giving 
this, I have noticed that since I upgraded the memory my monitor isn't 
doing that flashing/changing brightness level as often. In fact, it's 
almost quit doing it.


I think this may be due to my having vacuumed out the case  re-seating 
adapter cards during the upgrade. It also reinforces Mark's suggestion 
that the freeze-up may be caused by the video card.


I have experienced only one freeze-up since my original post. I was 
commenting to a blog post, and it froze when I hit the space-bar at the 
end of a word. I remembered to try the windoze key (in the form of the 
Ctrl+Esc work-around), and as I expected it was no joy. The keyboard is 
completely locked out at that point, as is the mouse.


I'll keep y'all posted.



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Re: Any thoughts on what might cause this?

2012-12-16 Thread John Sessoms

Are all your fans working, and nothing is overheating?


Oh, yeah.

I fixed all those the last time I replaced the power supply. They were 
still working good when I had it apart a couple weeks ago to install new 
memory. Made sure to vacuum all the dust out of the case then as well.


I think I built it in 2001, but it might be older than that. The 30GB 
HDD I replaced last year has a label Manuf:25APR2001. I don't remember 
if that's actually the original HDD. I've got a stack of old drives 
ranging in size from 850MB to 6GB, and one of those might have been the 
original.


The only thing that hasn't been replaced is the case  the floppy drive. 
The floppy drive is not connected any more. It stopped working  I 
couldn't find a replacement. The only floppy drives available are 
external USB, so I just took the cables out.


It's on at least its 3rd mother-board, 4th or 5th power supply, 2nd 
video card, 2nd sound card ...


Thinking about it, it used to freeze up a couple of times every week, 
and now it only seems to freeze about once or twice a month.



On Sat, Dec 15, 2012 at 7:50 PM, John Sessoms jsessoms...@nc.rr.com wrote:

From: Mark Roberts


John Coyle wrote:


-Original Message-

Can you remap the windows key operation to a function key?  I don't even
know if that is possible
but it sounds reasonable, I think.

On 15 December 2012 13:30, John Sessoms jsessoms...@nc.rr.com wrote:



Drat.

IBM 101-key click keyboard - no windoze keys. I'll have to look around
and see if I can scrounge up a spare windows-keyboard. Hate to give up
my good keyboard. I just love the feel of typing on this thing.

FWIW, it's been doing this maybe once or twice a month for years 
doesn't seem to be getting any worse.


On keyboards lacking a Windows key, Ctrl+Esc can be used instead.



You know, a cheap thing to try would be just getting a new keyboard. I
wouldn't put the keyboard itself at the top of the list of potential
culprits but it's worth a shot.



Current plan is to see if a new video card might do the trick (as you
suggested) and download a new mouse driver (per P.J.'s rogue DLL
suggestion).

I may have a spare windoze keyboard around here somewhere, and if I run
across it I'll give it a try. I don't think that's the problem though
because John Coyle's Ctrl+Esc does work to toggle the start menu when
it's not frozen and doesn't do anything when it is. I'd already tried it.

Other than that, I guess it's just something I'll have to live with
until this computer gets so old  decrepit it's no longer suitable to be
used as my goofing-off-on-the-internet computer.


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Re: Any thoughts on what might cause this?

2012-12-16 Thread George Sinos
Reminds me of the old joke about inheriting great-grandfathers axe.
The head has been replaced twice and the handle has been replaced
several times, but it's been in the family for years and we just can't
part with it.

gs


George Sinos

gsi...@gmail.com
www.georgesphotos.net
plus.georgesinos.com


On Sun, Dec 16, 2012 at 8:19 AM, John Sessoms jsessoms...@nc.rr.com wrote:
 Are all your fans working, and nothing is overheating?


 Oh, yeah.

 I fixed all those the last time I replaced the power supply. They were still
 working good when I had it apart a couple weeks ago to install new memory.
 Made sure to vacuum all the dust out of the case then as well.

 I think I built it in 2001, but it might be older than that. The 30GB HDD I
 replaced last year has a label Manuf:25APR2001. I don't remember if that's
 actually the original HDD. I've got a stack of old drives ranging in size
 from 850MB to 6GB, and one of those might have been the original.

 The only thing that hasn't been replaced is the case  the floppy drive. The
 floppy drive is not connected any more. It stopped working  I couldn't find
 a replacement. The only floppy drives available are external USB, so I just
 took the cables out.

 It's on at least its 3rd mother-board, 4th or 5th power supply, 2nd video
 card, 2nd sound card ...

 Thinking about it, it used to freeze up a couple of times every week, and
 now it only seems to freeze about once or twice a month.

 On Sat, Dec 15, 2012 at 7:50 PM, John Sessoms jsessoms...@nc.rr.com
 wrote:

 From: Mark Roberts

 John Coyle wrote:

 -Original Message-

 Can you remap the windows key operation to a function key?  I don't
 even
 know if that is possible
 but it sounds reasonable, I think.

 On 15 December 2012 13:30, John Sessoms jsessoms...@nc.rr.com wrote:



 Drat.

 IBM 101-key click keyboard - no windoze keys. I'll have to look around
 and see if I can scrounge up a spare windows-keyboard. Hate to give up
 my good keyboard. I just love the feel of typing on this thing.

 FWIW, it's been doing this maybe once or twice a month for years 
 doesn't seem to be getting any worse.

 On keyboards lacking a Windows key, Ctrl+Esc can be used instead.



 You know, a cheap thing to try would be just getting a new keyboard. I
 wouldn't put the keyboard itself at the top of the list of potential
 culprits but it's worth a shot.



 Current plan is to see if a new video card might do the trick (as you
 suggested) and download a new mouse driver (per P.J.'s rogue DLL
 suggestion).

 I may have a spare windoze keyboard around here somewhere, and if I run
 across it I'll give it a try. I don't think that's the problem though
 because John Coyle's Ctrl+Esc does work to toggle the start menu when
 it's not frozen and doesn't do anything when it is. I'd already tried it.

 Other than that, I guess it's just something I'll have to live with
 until this computer gets so old  decrepit it's no longer suitable to be
 used as my goofing-off-on-the-internet computer.


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RE: Any thoughts on what might cause this?

2012-12-15 Thread John Sessoms

From: John Coyle


On keyboards lacking a Windows key, Ctrl+Esc can be used instead.



Ok, in that case the Windoze key wouldn't help. I've tried Ctrl+Esc,
Ctrl+C, Ctrl+Break ... all to no effect.

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Re: Any thoughts on what might cause this?

2012-12-15 Thread Mark Roberts
John Coyle wrote:

-Original Message-

Can you remap the windows key operation to a function key?  I don't even know 
if that is possible
but it sounds reasonable, I think.

On 15 December 2012 13:30, John Sessoms jsessoms...@nc.rr.com wrote:

 Drat.

 IBM 101-key click keyboard - no windoze keys. I'll have to look around 
 and see if I can scrounge up a spare windows-keyboard. Hate to give up 
 my good keyboard. I just love the feel of typing on this thing.

 FWIW, it's been doing this maybe once or twice a month for years  
 doesn't seem to be getting any worse.

On keyboards lacking a Windows key, Ctrl+Esc can be used instead.

You know, a cheap thing to try would be just getting a new keyboard. I
wouldn't put the keyboard itself at the top of the list of potential
culprits but it's worth a shot.
 
-- 
Mark Roberts - Photography  Multimedia
www.robertstech.com





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Re: Any thoughts on what might cause this?

2012-12-15 Thread Eactivist
I was going to suggest that, but felt it might  be too obvious.

In my new laptop, occasionally it essentially locks the  control key as 
down, so I can't type in emails. I've googled and googled to find  out what the 
problem is and evidentially, according to lots of posts in various  
discussion forums, it is usually its an add-on mouse and its driver.

So  it MIGHT be a similar problem. But I definitely would try checking the 
Task  Manager first. 

HTH, Marnie 

In a message dated 12/14/2012 2:27:11  P.M. Pacific Standard Time, 
jsessoms...@nc.rr.com writes:
But rogue dll  makes me wonder if I need to look for a new mouse
driver. The one thing that  I'm sure is common to every occurrence is I
go to move the mouse pointer   find it's frozen.

Thanks for the ideas.  


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Re: Any thoughts on what might cause this?

2012-12-15 Thread John Sessoms

From: Mark Roberts

John Coyle wrote:


-Original Message-

Can you remap the windows key operation to a function key?  I don't even know 
if that is possible
but it sounds reasonable, I think.

On 15 December 2012 13:30, John Sessoms jsessoms...@nc.rr.com wrote:


Drat.

IBM 101-key click keyboard - no windoze keys. I'll have to look around
and see if I can scrounge up a spare windows-keyboard. Hate to give up
my good keyboard. I just love the feel of typing on this thing.

FWIW, it's been doing this maybe once or twice a month for years 
doesn't seem to be getting any worse.


On keyboards lacking a Windows key, Ctrl+Esc can be used instead.


You know, a cheap thing to try would be just getting a new keyboard. I
wouldn't put the keyboard itself at the top of the list of potential
culprits but it's worth a shot.


Current plan is to see if a new video card might do the trick (as you
suggested) and download a new mouse driver (per P.J.'s rogue DLL
suggestion).

I may have a spare windoze keyboard around here somewhere, and if I run
across it I'll give it a try. I don't think that's the problem though
because John Coyle's Ctrl+Esc does work to toggle the start menu when
it's not frozen and doesn't do anything when it is. I'd already tried it.

Other than that, I guess it's just something I'll have to live with
until this computer gets so old  decrepit it's no longer suitable to be
used as my goofing-off-on-the-internet computer.

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Re: Any thoughts on what might cause this?

2012-12-15 Thread David Parsons
Are all your fans working, and nothing is overheating?

On Sat, Dec 15, 2012 at 7:50 PM, John Sessoms jsessoms...@nc.rr.com wrote:
 From: Mark Roberts

 John Coyle wrote:

 -Original Message-

 Can you remap the windows key operation to a function key?  I don't even
 know if that is possible
 but it sounds reasonable, I think.

 On 15 December 2012 13:30, John Sessoms jsessoms...@nc.rr.com wrote:


 Drat.

 IBM 101-key click keyboard - no windoze keys. I'll have to look around
 and see if I can scrounge up a spare windows-keyboard. Hate to give up
 my good keyboard. I just love the feel of typing on this thing.

 FWIW, it's been doing this maybe once or twice a month for years 
 doesn't seem to be getting any worse.

 On keyboards lacking a Windows key, Ctrl+Esc can be used instead.


 You know, a cheap thing to try would be just getting a new keyboard. I
 wouldn't put the keyboard itself at the top of the list of potential
 culprits but it's worth a shot.


 Current plan is to see if a new video card might do the trick (as you
 suggested) and download a new mouse driver (per P.J.'s rogue DLL
 suggestion).

 I may have a spare windoze keyboard around here somewhere, and if I run
 across it I'll give it a try. I don't think that's the problem though
 because John Coyle's Ctrl+Esc does work to toggle the start menu when
 it's not frozen and doesn't do anything when it is. I'd already tried it.

 Other than that, I guess it's just something I'll have to live with
 until this computer gets so old  decrepit it's no longer suitable to be
 used as my goofing-off-on-the-internet computer.


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http://www.davidparsonsphoto.com

Aloha Photographer Photoblog
http://alohaphotog.blogspot.com/

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RE: Any thoughts on what might cause this?

2012-12-14 Thread John Sessoms

Doesn't happen enough to make the machine un-usable, just enough to be
peculiar. There's a lot of computer expertise on the list, so I thought
I'd ask.

It's a problem on the level of Why is the carpet protector creeping
sideways again?

... not quite as urgent as I know I made a cup of coffee, but what the
hell did I do with it?  ???


From: Bob W

I had similar problems with a Dell laptop that I used to use and I never
found out the cause. It started with some problems on  the sound card, and
issues with the fan and overheating. I think the issue was that Windows just
became too fat for the machine to support. I did several re-installs, and
maxed the memory, stripped everything back to basics (as far as that's
possible with Windows and consistent with running something useful and
secure).

It was an old machine so I gave up and bought a new machine with Win7 -
life's too short. I use the old one occasionally for playing with other
operating systems. It currently has Minix on, and someday I'll play about
with it.

B


-Original Message-
From: PDML [mailto:pdml-boun...@pdml.net] On Behalf Of John Sessoms

This is the computer I use for goofing off on the internet. WindozeXP
SP3.

Sometimes this computer will just freeze. Whatever is on the display at
that time will continue. Mouse pointer won't move. If there's something
coming from the speakers it will stutter continuously until power is
shut off. It does this at rare random times.


[...]


The power supply is reasonably new  I put a new, more powerful cooler
fan on the CPU the last time I replaced the power supply.

What else should I look at?





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Re: Any thoughts on what might cause this?

2012-12-14 Thread P. J. Alling
It sounds like it has a high priority task that's not completing.  
Usually this doesn't quite crash the GUI but does lock it up.  Back when 
I was doing SDK development it happened all the time, but then I could 
usually deduce which task had gone haywire, since I usually created the 
problem.  In this case it could be anything from a rogue dll that cannot 
completely load and doesn't fail gracefully to a hardware problem such 
as a problematic sector on a hard drive.   You don't mention if you're 
using SATA or PATA drives, ribbon cables can go bad over time and lead 
to very hard to diagnose problems if the error is intermittent.  I don't 
have enough long term experience with SATA cables to know if they could 
cause the same problem.  You can also have similar problems if any 
expansion cards aren't completely seated or there are cracked leads to 
the cards on the buss.


On 12/14/2012 11:26 AM, John Sessoms wrote:

Doesn't happen enough to make the machine un-usable, just enough to be
peculiar. There's a lot of computer expertise on the list, so I thought
I'd ask.

It's a problem on the level of Why is the carpet protector creeping
sideways again?

... not quite as urgent as I know I made a cup of coffee, but what the
hell did I do with it?  ???


From: Bob W

I had similar problems with a Dell laptop that I used to use and I never
found out the cause. It started with some problems on  the sound 
card, and
issues with the fan and overheating. I think the issue was that 
Windows just
became too fat for the machine to support. I did several re-installs, 
and

maxed the memory, stripped everything back to basics (as far as that's
possible with Windows and consistent with running something useful and
secure).

It was an old machine so I gave up and bought a new machine with Win7 -
life's too short. I use the old one occasionally for playing with other
operating systems. It currently has Minix on, and someday I'll play 
about

with it.

B


-Original Message-
From: PDML [mailto:pdml-boun...@pdml.net] On Behalf Of John Sessoms

This is the computer I use for goofing off on the internet. WindozeXP
SP3.

Sometimes this computer will just freeze. Whatever is on the display at
that time will continue. Mouse pointer won't move. If there's something
coming from the speakers it will stutter continuously until power is
shut off. It does this at rare random times.


[...]


The power supply is reasonably new  I put a new, more powerful cooler
fan on the CPU the last time I replaced the power supply.

What else should I look at?








--
Don't lose heart, they might want to cut it out, and they'll want to avoid a 
lengthly search.


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Re: Any thoughts on what might cause this?

2012-12-14 Thread Darren Addy
As soon as you experience some sort of freeze, hit CTRL+ALT+DELETE and
click the Task Manager button.
The Task Manager window will open. Click on the Processes tab and
then click the CPU heading (twice). That will sort the list in
descending order by CPU usage. See if you have a process that is
eating up a large percentage of your CPU time. You can Google the
process name if you don't recognize it.

Prime suspect is normally spyware/adware, so downloading the free
MalwareBytes for a check of that is recommended.

There are lots of other possibilities, but that's what I'd try first.

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Re: Any thoughts on what might cause this?

2012-12-14 Thread P. J. Alling

On 12/14/2012 3:04 PM, Darren Addy wrote:

As soon as you experience some sort of freeze, hit CTRL+ALT+DELETE and
click the Task Manager button.
The Task Manager window will open. Click on the Processes tab and
then click the CPU heading (twice). That will sort the list in
descending order by CPU usage. See if you have a process that is
eating up a large percentage of your CPU time. You can Google the
process name if you don't recognize it.

Prime suspect is normally spyware/adware, so downloading the free
MalwareBytes for a check of that is recommended.

There are lots of other possibilities, but that's what I'd try first.

Unless the UI is so completely locked up that the old three finger 
salute doesn't get recognized.  I'm assuming he's already tried that.  
When the latest HD failure in my desktop happened the system would lock 
up trying to load software from almost failed sectors on the failing 
drive.  Sometimes the GUI would lock and only a hard reboot would get it 
going again.


--
Don't lose heart, they might want to cut it out, and they'll want to avoid a 
lengthly search.


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Re: Any thoughts on what might cause this?

2012-12-14 Thread John Sessoms

From: P. J. Alling

It sounds like it has a high priority task that's not completing.
Usually this doesn't quite crash the GUI but does lock it up.  Back when
I was doing SDK development it happened all the time, but then I could
usually deduce which task had gone haywire, since I usually created the
problem.  In this case it could be anything from a rogue dll that cannot
completely load and doesn't fail gracefully to a hardware problem such
as a problematic sector on a hard drive.   You don't mention if you're
using SATA or PATA drives, ribbon cables can go bad over time and lead
to very hard to diagnose problems if the error is intermittent.  I don't
have enough long term experience with SATA cables to know if they could
cause the same problem.  You can also have similar problems if any
expansion cards aren't completely seated or there are cracked leads to
the cards on the buss.


That describes it pretty well, the GUI doesn't crash but it does lock up.

I've tried just walking away from it to see if maybe it will eventually
unlock, but so far no joy. I've left it over-night  it's still frozen
the next day.

It still has PATA CD-ROM  DVD drives, but the new HDD is SATA. Cables
should all be good, I had a look at them when I was replacing the memory.

But rogue dll makes me wonder if I need to look for a new mouse
driver. The one thing that I'm sure is common to every occurrence is I
go to move the mouse pointer  find it's frozen.

Thanks for the ideas.

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Re: Any thoughts on what might cause this?

2012-12-14 Thread John Sessoms

From: Darren Addy

As soon as you experience some sort of freeze, hit CTRL+ALT+DELETE and
click the Task Manager button.
The Task Manager window will open. Click on the Processes tab and
then click the CPU heading (twice). That will sort the list in
descending order by CPU usage. See if you have a process that is
eating up a large percentage of your CPU time. You can Google the
process name if you don't recognize it.

Prime suspect is normally spyware/adware, so downloading the free
MalwareBytes for a check of that is recommended.

There are lots of other possibilities, but that's what I'd try first.


Doesn't respond to CTRL+ALT+DELETE once it's frozen. Caps Lock  Num
Lock will not toggle once it's frozen. No response to keyboard or mouse
at all. That's why I'm having to do hard reboots.

I don't think it's spyware/adware. I'm running a strong HOSTS file,
fairly restrictive privacy settings on my browser  NoScript. I've got
fairly good anti-virus  have been regularly applying all of the
security updates for WindozeXP.

If I have Firefox open, when I re-launch it after rebooting all of the
previously open tabs will reload and the focus will be on the tab that
was in focus when it froze. It opens to the same state it was in at the
time it froze.

Thunderbird, OTOH, will open without any message loaded, but it will
show the message that I was reading when it froze marked as read.

Plus it has occasionally frozen when I was using my word processor or
spread sheets or playing solitaire and not on the web.

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Re: Any thoughts on what might cause this?

2012-12-14 Thread Anthony Farr
On 15 December 2012 09:26, John Sessoms jsessoms...@nc.rr.com wrote:
 But rogue dll makes me wonder if I need to look for a new mouse
 driver. The one thing that I'm sure is common to every occurrence is I
 go to move the mouse pointer  find it's frozen.

It's still possible that it's a video rendering freeze.  I've had a
similar occurrence and it became apparent that the mouse did function
(I got a reaction to a click at an assumed position of the mouse
pointer) but the display wasn't updating to any new input or actions.
I've found that pressing the Windows key on a frozen display can
sometimes break through the lockup better than ctrl-alt-del, the start
menu will pop up and allow you to access some actions, although you
may need to use the arrow keys and enter.  I've been able to do a
soft shutdown this way.  Repeated hard shutdowns seem to get a
computer into a downward spiral of errors and faults.

regards, Anthony

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Re: Any thoughts on what might cause this?

2012-12-14 Thread John Sessoms

From: Anthony Farr

On 15 December 2012 09:26, John Sessoms jsessoms...@nc.rr.com wrote:

But rogue dll makes me wonder if I need to look for a new mouse
driver. The one thing that I'm sure is common to every occurrence is I
go to move the mouse pointer  find it's frozen.


It's still possible that it's a video rendering freeze.  I've had a
similar occurrence and it became apparent that the mouse did function
(I got a reaction to a click at an assumed position of the mouse
pointer) but the display wasn't updating to any new input or actions.
I've found that pressing the Windows key on a frozen display can
sometimes break through the lockup better than ctrl-alt-del, the start
menu will pop up and allow you to access some actions, although you
may need to use the arrow keys and enter.  I've been able to do a
soft shutdown this way.  Repeated hard shutdowns seem to get a
computer into a downward spiral of errors and faults.

regards, Anthony


Drat.

IBM 101-key click keyboard - no windoze keys. I'll have to look around
and see if I can scrounge up a spare windows-keyboard. Hate to give up
my good keyboard. I just love the feel of typing on this thing.

FWIW, it's been doing this maybe once or twice a month for years 
doesn't seem to be getting any worse.


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Re: Any thoughts on what might cause this?

2012-12-14 Thread Anthony Farr
Can you remap the windows key operation to a function key?  I don't
even know if that is possible but it sounds reasonable, I think.

regards, Anthony



On 15 December 2012 13:30, John Sessoms jsessoms...@nc.rr.com wrote:

 Drat.

 IBM 101-key click keyboard - no windoze keys. I'll have to look around
 and see if I can scrounge up a spare windows-keyboard. Hate to give up
 my good keyboard. I just love the feel of typing on this thing.

 FWIW, it's been doing this maybe once or twice a month for years 
 doesn't seem to be getting any worse.



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RE: Any thoughts on what might cause this?

2012-12-14 Thread John Coyle
On keyboards lacking a Windows key, Ctrl+Esc can be used instead.


John Coyle
Brisbane, Australia


-Original Message-
From: PDML [mailto:pdml-boun...@pdml.net] On Behalf Of Anthony Farr
Sent: Saturday, 15 December 2012 3:05 PM
To: Pentax-Discuss Mail List
Subject: Re: Any thoughts on what might cause this?

Can you remap the windows key operation to a function key?  I don't even know 
if that is possible
but it sounds reasonable, I think.

regards, Anthony



On 15 December 2012 13:30, John Sessoms jsessoms...@nc.rr.com wrote:

 Drat.

 IBM 101-key click keyboard - no windoze keys. I'll have to look around 
 and see if I can scrounge up a spare windows-keyboard. Hate to give up 
 my good keyboard. I just love the feel of typing on this thing.

 FWIW, it's been doing this maybe once or twice a month for years  
 doesn't seem to be getting any worse.



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RE: Any thoughts on what might cause this?

2012-12-13 Thread Bob W
I had similar problems with a Dell laptop that I used to use and I never
found out the cause. It started with some problems on  the sound card, and
issues with the fan and overheating. I think the issue was that Windows just
became too fat for the machine to support. I did several re-installs, and
maxed the memory, stripped everything back to basics (as far as that's
possible with Windows and consistent with running something useful and
secure).

It was an old machine so I gave up and bought a new machine with Win7 -
life's too short. I use the old one occasionally for playing with other
operating systems. It currently has Minix on, and someday I'll play about
with it.

B

 -Original Message-
 From: PDML [mailto:pdml-boun...@pdml.net] On Behalf Of John Sessoms
 
 This is the computer I use for goofing off on the internet. WindozeXP
 SP3.
 
 Sometimes this computer will just freeze. Whatever is on the display at
 that time will continue. Mouse pointer won't move. If there's something
 coming from the speakers it will stutter continuously until power is
 shut off. It does this at rare random times.
 
[...]
 
 The power supply is reasonably new  I put a new, more powerful cooler
 fan on the CPU the last time I replaced the power supply.
 
 What else should I look at?



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