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Is this a bad processor or bad power supply??

HepDude

Senior member
Apr 7, 2000
501
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Hello,

A PC that I built many months ago for a family member and has worked fine up until now, has the following new problem, which occurred at the peak of a recent heat wave:

- Most of the time, it will successfully go through the entire "post" process, but then hang at the bottom of that screen, right before the boot process. No other messages at all. This happens when I boot to Floppy, CD-ROM or Hard Drive (and I've tried that while only having that device installed and removing the other two).

- Once in a while (like 1 out of 20 times), the boot process will start, but then hang partway into the process. This has occurred twice during Windows boot, with the PC hanging with just the wallpaper showing, but also once during bootup from CD-ROM (partway into the Maxtor diag program startup on that bootable CD). However, note that most of the time, the boot process doesn't even start.

My guess is either the power supply or else the processor were partially damaged due to overheating during the heat wave. I've also considered the IDE chip, but I'm under the impression that the floppy boot doesn't use that, so if it were the IDE chip, then it would boot fine from the floppy.

Does this sound familiar to anyone? If it does, it might help me to only buy the part that was most likely to be the damaged one.

PS I've also tried clearing the CMOS and setting to the "failsafe" BIOS settings, but that didn't help (and it seems unlikely that that would be affected by overheating).

Thanks!
 

ElFenix

Elite Member
Super Moderator
Mar 20, 2000
102,402
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does it do that if you let it sit off for a while then turn it on?
 

HepDude

Senior member
Apr 7, 2000
501
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0
Letting it sit makes no difference.

The only spare PS I have is one which is a 230Watt (from years ago), and I tried it and it doesn't even turn the board on.

I don't want to try using parts from my main PC, in case that testing process breaks that part and I then have two dead PCs. :)
 

bjc112

Lifer
Dec 23, 2000
11,460
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I highly doubt it's a dead or damaged CPU as it would probably not even turn on, just sit there.. No beeps, no nothing...

Have you ran memtest86 by any chance to rule out the possibilty of some faulty memory? ( Runs from a bootable floppy)

Since you say that power supply is a little on the small side, pop out all expansion cards except CPU,Video,Ram and your HDD...

See if you can make it to windows.

G/L

:D
 

wetcat007

Diamond Member
Nov 5, 2002
3,502
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Originally posted by: bjc112
I highly doubt it's a dead or damaged CPU as it would probably not even turn on, just sit there.. No beeps, no nothing...

Have you ran memtest86 by any chance to rule out the possibilty of some faulty memory? ( Runs from a bootable floppy)

Since you say that power supply is a little on the small side, pop out all expansion cards except CPU,Video,Ram and your HDD...

See if you can make it to windows.

G/L

:D

Could be overheating or something though.
 

HepDude

Senior member
Apr 7, 2000
501
0
0
I already tried removing all cards except video and the booting drive and it didn't help.

And I'm doing all this testing with the sides of the case off, so the only overheating was during that initial period when the problem first occurred.