Hi all... I have a p4 1gig ram machine with standard hardware (2 ide hd, dvd-rw, cd-rw, 128mb graphics and a few usb connections)
I built it in a soyo case with the stock 350w psu.
Everything works great, except I have one strange problem.
I can leave the machine on for days, rebooting when necessary without any problems at all. But sometimes, on a cold boot (rare occasion when machine has been off), it will start up, load windows, allow me to launch apps as normal, and then a few minutes later - zap - it restarts as if someone had pushed the power button.
This NEVER happens after the first few minutes, and NEVER on a reboot, only a cold boot.
I began suspecting something at the end of the startup routine, maybe something loading in the background that crashed the machine, but the other day it happened 5 times in a row, and the last 3 times never made it past the bios screen (so that rules out windows errors).
And then, it started up, and has been on for almost 36 hours no problems.
I should mention this machine is plugged into a small ups (that never fails during power outages) and everything is close to brand new.
Should I be suspecting the power supply? Seems like it would either work or not... but the cold reboot-only scenario has got me puzzled.
Could it be the ups?
Any light anyone can shed on this would be greatly appreciated, I dont want to start taking things apart without knowing the most likely suspect.
Thanks very much... Michael
I built it in a soyo case with the stock 350w psu.
Everything works great, except I have one strange problem.
I can leave the machine on for days, rebooting when necessary without any problems at all. But sometimes, on a cold boot (rare occasion when machine has been off), it will start up, load windows, allow me to launch apps as normal, and then a few minutes later - zap - it restarts as if someone had pushed the power button.
This NEVER happens after the first few minutes, and NEVER on a reboot, only a cold boot.
I began suspecting something at the end of the startup routine, maybe something loading in the background that crashed the machine, but the other day it happened 5 times in a row, and the last 3 times never made it past the bios screen (so that rules out windows errors).
And then, it started up, and has been on for almost 36 hours no problems.
I should mention this machine is plugged into a small ups (that never fails during power outages) and everything is close to brand new.
Should I be suspecting the power supply? Seems like it would either work or not... but the cold reboot-only scenario has got me puzzled.
Could it be the ups?
Any light anyone can shed on this would be greatly appreciated, I dont want to start taking things apart without knowing the most likely suspect.
Thanks very much... Michael
