If you've had experience of several bad CPU's then you must be a system
builder with hundreds of builds under your belt. I'm just a hobbyist and
have only built 20 or so boxes over the years and I've never even heard of
anyone having a CPU go bad until you said it. Bad mobo's, PSU's,
hardrives, floppies, optical drives, video cards, RAM, fans etc. I've seen
it all with the single exception of the processor. CPU's are by far the
most reliable component of any PC, period. Intel and AMD deserve great
respect for that major accomplishment. Of course static electricity can
kill one pretty easily but that's not "going bad", that's user error.
Somewhere in this area in a land fill is my original IBM PS/2 486 SX-25
and I'd bet anything that if it were buried functional with no bent or
broken pins it would still run if socketed in a working box. I really
believe that..
On Fri, 21 May 2010 14:09:01 -0500, Gaffer <14...@castle-computer.co.uk>
wrote:
On Friday 21 May 2010 15:02:35 Scoobydo wrote:
I assume you've looked for a borked BIOS setting? Doesn't make sense
the CPU is bad. I've never heard of one going bad so must assume
something else is happening..
On Fri, 21 May 2010 06:24:39 -0500, Thane Sherrington
<th...@computerconnectionltd.com> wrote:
> I have an HP machine that won't boot with its CPU in it (boots to
> three long beeps and then one long continuous beep.) It has a
> ADA4200IAA5CU in it
> http://www.cpu-world.com/CPUs/K8/AMD-Athlon%2064%20X2%204200+%20-%2
>0ADA4200IAA5CU%20%28ADA4200CUBOX%29.html
>
> When I put in another CPU ADA5600IAA6CZ
> http://www.cpu-world.com/CPUs/K8/AMD-Athlon%2064%20X2%205600+%20-%2
>0ADA5600IAA6CZ%20%28ADA5600CZBOX%29.html
>
> It boots fine. So one would assume, bad CPU. But when I move this
> CPU to a test motherboard, the machine boots fine.
>
> Any ideas?
>
> T
I've had experience of several bad CPU. Having said that, and in view
of the tests that the OP has done, BIOS settings are the first place to
check. The other is the CPU psu itself. I've seen bad capacitors
cause the psu to shut down on heavy load but supply power just fine to
a lighter load, ie a CPU that draws less power.
The other suggestion I would make is to check the BIOS beep codes to see
what the beep code means.
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