Bizarre computer turning on and off (mystery problem)

[piano0011]

pc reboots..... overheating?

Hello there! I also have a similiar experienced with my pc but not as frequent (luckily).....The pc was on for most of the day when it just rebooted my itself! Is this a overheating problem? I also did check my power supply option and this is disable! Should this be enable? if so, should it be set to generic or American Power Conversion? Thanks!!!!

 

[ceewi1]

Similar problem - are you experiencing whining sounds as well, or just the restarts? If you've got whining, you'd be best off to replace the PSU

The pc was on for most of the day when it just rebooted my itself! Is this a overheating problem?

It's possible. Check the CPU temperatures using a program like Speedfan.

I also did check my power supply option and this is disable! Should this be enable? if so, should it be set to generic or American Power Conversion? Thanks!!!!

I'm going to go out on a limb here and guess that you're talking about the UPS service under 'Power Options' in the control panel? If so - do you have a UPS?

 

[PC eye]

SpeedFan iis free on it's home site's download page found at http://www.almico.com/sfdownload.php

Besides a hot cpu seeing restarts a flaky supply can also be a cause for concern at times. The first thing to look at often overlooked when a cpu starts cooking is the fan on the heat sink itself. The stock fans are noted for getting cluttered with dust buildup and other crud where you have to occasionally blast the insides of a case out with a can of compressed air.

 

[Bronson7]

i unplugged the 20 pin from the p4p800 and used the tester. Is there anything else i should have unplugged? And why does the tester show full green lights if the PS is bad? I'm confused and thought the 11 dollar tester would be 'foolproof' lol

should i unplug everything from the PS completely then test it to see if i hear the noise?

I've never placed a whole lot of faith in those led testers. Best to take voltage readings right off the backside of the 20/24 plug while it's hooked up to the board and under load.
Bronson7

 

[PC eye]

To accurately read amperage as well as voltage you would probe a circuit with a load. The only way for that is a closed circuit that is active. I got a quicky Antec $10 tester here that sits in a drawer idle. Next to that is a Fluke $80 multimeter. Which do you think will be the first one ro see use? Without a second the instinct will be to grab the Fluke!