Baffling Power-off - Techist - Tech Forum

Go Back   Techist - Tech Forum > Computer Hardware > Hardware Repairs and Troubleshooting
Click Here to Login
Closed Thread
Thread Tools Display Modes
Old 05-08-2007, 06:59 AM   #1 (permalink)
Newb Techie
Join Date: May 2007
Posts: 2
Default Baffling Power-off

I've had this problem for a while. It resurfaced recently after installing Fedora Core 6.

Basically the machine seems to randomly power-off. No warning, nothing. Just switches off. I have ran memtest86, no problems there. The power supply is generating enough, the voltages all seem okay. It seems to happen at random, there is no associated process, or action which causes it. Motherboard temps seem okay.

THe system is:

AMD Athlon64 3700
2 x 512mb Corsair Value RAM
ECS KN1 Extreme motherboard (with nforce4 chipset)
480w Hiper psu

Times it has happened:

It used to happen a lot while running Gentoo linux, so at first I thought that perhaps I had "overoptimised" the OS. However it does periodically happen while in Windows XP. It was happening every time I booted Fedora COre 6 from Grub. It didn't even get to load the kernel, just switched off. It most recently happened while updating packages in Fedora.

It isn't made worse when I am running intensive programs such as games. I just can't figure this one out.

Does anyone have any ideas?

dmdrummond is offline  
Old 05-08-2007, 01:48 PM   #2 (permalink)
Ultra Techie
Join Date: Dec 2006
Location: Liverpool, UK
Posts: 511
Default Re: Baffling Power-off

You checked for loose cables from the PSU, could be a faulty PSU.

HAF 932 -- ASUS P8Z68-V
Intel i5 @ 4.5Ghz -- CoolerMaster Hyper 212 Plus
8GB Corsair Vengeance Jet Black 1600MHz -- 2x XFX ATi Radeon HD 6970 2GB
Raze664 is offline  
Old 05-22-2007, 07:04 AM   #3 (permalink)
Newb Techie
Join Date: May 2007
Posts: 2
Exclamation Re: Baffling Power-off

Checked the power cables, they are all seated fine. Just installed Solaris, which also boots from grub, and it switches off at exactly the same time, and in exactly the same way. I really have no idea what could be causing this. Any more suggestions?
dmdrummond is offline  
Old 05-22-2007, 11:48 AM   #4 (permalink)
Super Techie
networkgeek's Avatar
Join Date: Oct 2006
Location: TN
Posts: 367
Default Re: Baffling Power-off

ouch. I hate to say this. but I experienced something a lot like this on a server at work. it was the motherboard going bad that did it.

the motherboard is required to complete the circuit with the psu when you press the power switch. sometimes a bad motherboard will break that circuit and cause the computer to power off or restart.

only solution is mobo replacement.

you already tested memory which was good

have you checked the hdd with a diagnostic yet?
google drive fitness test if you need a program

but based on what you said happens in your post, I still think it is probably the motherboard. most likely the software is making calls to a part of the board that is bad. it shorts and cuts power.
networkgeek is offline  
Closed Thread

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Old Power supply Guide (2008) Ste New Systems | Building and Buying 223 12-12-2009 08:05 PM
shorting power switch pins cristo33 Hardware Repairs and Troubleshooting 1 05-02-2007 11:16 PM
Connecting the power button cristo33 Hardware Repairs and Troubleshooting 2 04-29-2007 05:59 PM
NO power up at all. -Read- baseballfreakjc25 Hardware Repairs and Troubleshooting 4 04-16-2007 02:13 PM
just changed power supply, weird harddrive problem (sata) idrisguitar Monitors, Printers and Peripherals 0 03-31-2007 10:47 AM

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 03:37 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.