Why does my computer keep rebooting itself?

November 28, 2010 at 00:55:20
Specs: Windows 7, Intel Core i7-870 Quad core (2.93GHz) G-Skill DDR3 8GB 1600 RAM
I have a fairly new computer (about 2 months old) and its a top of the line gaming computer. But when i try to carry out certain things on the computer it instantly shuts down and reboots. One such example would be installing a game. But although some things trigger a reboot other times it just randomly reboots sometimes it actually reboots itself as it is about to shut down. This has been really confusing for me because its never shut down while i have been playing a game and yet it shuts down by me doing certain things and reboots when i have told the computer to shut down..? Just so you know i have tested each ram stick and they are all fine. I have also tested my hardrive on other computers to see if it reboots and it doesn't. To me this leaves only 2 more things the motherboard or something to do with power supply. I'm not too familiar with motherboards or power supplies and am not sure if they can cause such reboots. I think it should be pointed out that my PSU is 900W. I'm not sure if because its so high it requires some special attachment or something so it will work as i've said im not familiar with these things. If someone could help it would be greatly appreciated as these reboots are extremely anoyying. My friend knows alot about computers and even he is confused.
Here are my system specs.
comp specs
# Intel Core i7-870 Quad core (2.93GHz)
# 7.1 CH HD Audio on Board
# Asus P7P55-ELX Motherboard
# Gigabit LAN On Board
# Nvidia GTX470 1.2GB
# G-Skill DDR3 8GB 1600 RAM
# Western Digital Black caviar 1TB HDD
# GW 900W PSU
# Aerocool BX-500 Tower
# LG Blu-Ray DVD Burner
#Windows 7 Home Premium 64 bit edition

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November 28, 2010 at 07:51:57
"Just so you know i have tested each ram stick and they are all fine"

Meaning what? You ran memtest86 (or Windows Memory Diagnostic) on each stick individually, then as a group & no errors where found?

"I think it should be pointed out that my PSU is 900W"

Never base a PSU on wattage. Manufacturers can juggle the numbers to come up with a 900W rating. Having adequate amperage is what's important, especially on the +12v rail. And it's generally best to get a PSU that has a single +12v rail with a high amperage rating rather than a unit with multiple +12v rails. If your unit has the multi-rail design, it's important to "hand balance" the compnants so that one +12v rail isn't being overloaded while another sits idle. Also, the PSU should be built using high quality components. Obviously the hardware is difiicult to determine so it's best to stick with brand names that have a good reputation.

Does GW = Great Wall?


Have you monitored your CPU temp to make sure it's not overheating?

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November 29, 2010 at 11:57:13
somone in the past has asked me to check temps and voltages and they were found to be fine. Yes i did use mem test to check each ram individually but i dont think i tested them all together so ill go do that. And yes GW stands for Great Wall

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November 29, 2010 at 15:21:08
i repair laptops and computer for 22 years total. from my experience the recovery disk installs and reboots itself over and over again until its finish it took long as a day or two. then you have to download the drivers free from the web site dell, hp, etc.dont install any other drivers or anything until its done. if you use the recovery disk and when its finish wait until it installeds and reboots over and over again. call my at 917 733-9003 my name is donald if it works

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