System randomly auto-reset and auto-off/-on - Techist - Tech Forum

Go Back   Techist - Tech Forum > Computer Hardware > Hardware Repairs and Troubleshooting
Closed Thread
Thread Tools Display Modes
Old 05-10-2007, 12:58 AM   #1 (permalink)
Newb Techie
Join Date: May 2007
Posts: 2
Default System randomly auto-reset and auto-off/-on

Good day to everyone,

I've bought some parts of my system (processor, motherboard, memory, graphics card) this January 2007. Here are the specs:

Intel Core 2 Duo E6600 2.4GHz
Asus P5B-Deluxe
2GB DDR2 paired Corsair XMS2 series (placed in interleaved mode)
Nvidia 7600GT 256MB 128-bit
4 Storage devices:
-1 Seagate 80GB SATA
-1 Seagate 250GB SATA
-1 Seagate 40GB PATA (master)
-1 Sony DVD-Writer (slave)
535 Watts Enermax EG565P-VE 24P
Samsung 19" 940BW (connected using DVI)
Leadtek Winfast TV2000 Tuner (PCI)
Standard A4Tech PS2Keyboard
Brandless USB optical mouse
Windows XP Service Pack 2

The problem started two days:
-the system randomly resets itself at random stages of boot/use: before POST could begin (before the first beep when the basic info on the graphics card is displayed); during POST; in the BIOS setup; after POST; during OS startup; OS running, idle or in use.
-at random, either after an auto-reset or manual power-on, the system will immediately (before the basic info on the graphics card is displayed) auto-off for 3 seconds then auto-on.
-at random, after an auto-reset, the screen will just be blank and the power button won't work, even after pressing it for more than 4 seconds.
-at random, though seldom but only after an auto-reset, BIOS would report that I have misconfigured my overclock settings (sorry, I can't recall the exact statement) even though i have never overclocked my system or tampered w/ the timings and voltage settings.

What I have tried:
-removed all of the connected peripherals, except for the DVI, keyboard, & mouse.
-removed the Leadtek Winfast TV2000 Tuner.
-booted w/o peripherals (including the display) and w/ data/power cable for storages devices unplugged.
-loaded the default BIOS settings.
-performed a hardware reset (removed battery, shorted the reset PIN, waited 20 secs, unshorted the reset PIN, installed the battery).

Some notes:
-the motherboard never beeped any error messages.
-never overclocked my system or tampered w/ the timing and voltage settings.
-CPU temp is at 51C~54C (in BIOS) and 46C~48C (in Windows; idle) (i dont know the ambient temp, but I leave in the tropics).
-tried swaping the memory; used the memory slots 3 & 4; used only one of the memory modules (tried very memory slots, and the other memory module).
-My PC doesn't have any internet connection.
-Although I suspect its the motherboard that's the problem, I'm not ruling out the other components: memory, graphics card.

Since its my PC at home and its my shift at work, I'll need all the solutions you can throw so I can do as many test as possible when I get back at home.


tbytes is offline  
Old 05-10-2007, 10:51 AM   #2 (permalink)
Ultra Techie
Join Date: Dec 2006
Location: Liverpool, UK
Posts: 511
Default Re: System randomly auto-reset and auto-off/-on

Fans look like they cannot take the whole heat. Can you get more fans installed on the case. My computer runs at about 30 idle and about 37 just after gaming.

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 05-11-2007, 12:10 AM   #3 (permalink)
Newb Techie
Join Date: May 2007
Posts: 2
Default Re: System randomly auto-reset and auto-off/-on

Thanks for your reply.

The temp might be high, but weeks ago before this problem (while I was more into playing games than just watching DVDs), the temp could max at 65C for hours at a time w/o problem, even during the day.

Also, just tried running my system w/ the motherboard out of its casing, w/ only the DVI & keyboard connected to it and w/ only one memory module. The system still suffered the same random resets and power-off/-on. Even w/ a different HSF (w/c is a little bigger and noisier but has much more airflow), it didn't make any difference.

After about 6~7hrs, I might be able to get hold of a spare PSU, memory, motherboard, & CPU for testing.

Thanks again for the reply.

Everybody please feel free to pitch in your ideas.

tbytes 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

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 08:26 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.