Power supply or Mobo, or AMD?

Dede

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Mar 16, 2001
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My problem is not quite the same as the one a few posts down.
I have an AMD 1Ghz Tbird, on an MSI K7T pro2a mobo, a visiontek xtasy video card, with the geforce 3 and 64 Mb, and memory pc133, 526mb, power supply 300W by award model ESP-300. Operating system XP.
What hapens is that the system crashes after a few minutes, somtimes during the start-up cycle, even as soon as in the middle of a disk scan before start-up. The monitor goes to stand-by, the hard disk led stays on continously, the cpu fan slows a bit to the stand-by speed, and the reset switch does not work anymore. The only way to shut down is with the on/off switch, however when I use it, the computer will not restart. I get 4 red led lights on the mobo, which means the processor may be damaged, and nothing happens except the hard disk led is on all the time. But when I use the master on/off switch in the back and/or unplug the computer, then it will reboot normaly until the crash in a few seconds. I switched cables to no avail.
I have taken the hard disk out and installed it on my old computer (AMD K6 500Mhz), and it runs okay, even when I transfer all the components (video, sound, modem cards, and even used the same memory).
I don't realy think it's the power supply, but maybe somone can tell me how to test it. That only leaves the mobo, and the cpu. Any ideas how I can verify this?
Thank's in advance for any help.
 
hmmmm

hard to diagnose mobo/psu problems.

things you can try:

1. make sure you dont have any thermal shutoff enabled, sometimes that can be missbehaving and cauze the system to shutoff unnecessarily.

2. set your bios settings to maximum compatibility... i.e. slowest.

3. if you can boot into windows, run a program called motherboard monitor. it will let you monitor the voltages being supplied by the PSU. low values/ fluctuating values = poor/crap PSU.
(can also watch the voltages from the bios if you cant get into windows)

4. memtest86 - boots of floppy and stress tests the ram, allows you to rule out ram problems.


the mobo is a good brand, and AMD cpu's actually have a low failure rate, putting aside people cracking cores. so my money would be on your PSu not supplying enough juice.

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