The first cpu I've seen go bad was a 100MHz 486 cpu (if I remember correctly) and the cache went bad for no apparent reason. If you disabled the cache the box worked fine albeit very slow. The second was a pentium 233 mmx and problem was identicle to the prior one. I had one celeron 300A go dead for no apparent reason and it had good cooling so it wasn't due to heat. It was in a regular and not overclocked machine. I had a pentium-M 2GHz cpu die completely and it was running a large copper heatsink so it wasn't heat, and I put another 1.7 cpu on the board and it ran well for about another year till the mobo died (that box did run 24/7 as a server/DVR box). The remaining ones however I did suspect heat as the cause of death or dusfunction.
I've had a lot more motherboards bite the dust though, sometimes fryed when the PSU went sketchy and sometimes on their own. Lots of power supplies have gone south though (more that mobos + cpus combined) lopaka ________________________________ From: Scoobydo <swza...@yahoo.com> To: hardware@hardwaregroup.com Sent: Fri, May 21, 2010 3:41:20 PM Subject: Re: [H] Odd CPU issue Clearly you have more experience than me but you did say gone bad because of overheating right? Most components I've had go bad did so for no apparent reason. They just failed at some point. I've never seen a CPU do that and even old socket 462 Athlon XP's shut down when over heated saving themselves from frydom. I base that on the fact that the last one I worked on (2800+) wouldn't run for more than a couple minutes in Windows because it was showing 70C in the BIOS. After I cleaned the gunk off dude's heatsink and applied new TIM. Problem solved and it ran as good as new. I have an ancient PII 333 MHz Slot style CPU right now in my apartment that runs as well as the day it was built in 1997. An old style horizontal HP Vectra and I don't know why I even keep it around.. On Fri, 21 May 2010 17:17:51 -0500, Robert Martin Jr. <lopa...@pacbell.net> wrote: > I've seen at least 5-6 CPU's go bad. Sometimes it's just the cache memory and > sometimes the processor. Old athlons would fry pretty quick if the CPU fan > goes bad often just within a few minutes. I've probably built or repaired > 500+ systems just as a hobbyist. I used to average 3-4 full systems a week > back in the old days. Now that I don't have a lot of time, I've probably done > new boxes 3 this month. > > lopaka > > > > > ________________________________ > From: Scoobydo <swza...@yahoo.com> > To: hardware@hardwaregroup.com > Sent: Fri, May 21, 2010 2:59:23 PM > Subject: Re: [H] Odd CPU issue > > 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. >> > > > --Using Opera's revolutionary e-mail client: http://www.opera.com/mail/ --Using Opera's revolutionary e-mail client: http://www.opera.com/mail/
