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Gaming Comp Turns on for 1 second then off!

Forum Homebuilt Systems : New System Build - Gaming Comp Turns on for 1 second then off!

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I just built a new gaming computer and finished it yesterday. It ran for about 2 hours then just shut off without making any noises/beeps. Now.. if I hit the power button it turns on the lights and fans for about a second and then shuts off. I tried the paper clip test and the PSU turns my fans and my lights on. Does this mean the Mobo is junk? Everything is brand new! :(

My specs.

720 G Seagate HD SATA
NVDIA GeForce 295 GTX
AMD Phenom 4x Black Edition
750W Corsair PSU
ASUS M4A79T Deluxe Motherboard AM3
2 X2G Corsair Dominator DDR3


Any help would be appreciated! This is my very first computer build so I don't know very much on the technical aspects of it.

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You need to connect a small speaker to the speaker header located next to the power and reset switch headers on the board. See what beeps you get.

------------------------------ My Guide to choosing parts
A big list of recommended parts
Troubleshooting Guide w/links
Reply to Proximon

Very similar to what mine is doing.

Reply to Ace_437

The symptom itself is just the BIOS resetting in an effort to boot. It can be an indication of many things on it's own.

------------------------------ My Guide to choosing parts
A big list of recommended parts
Troubleshooting Guide w/links
Reply to Proximon

True. I just don't know how to find out what it is. And I don't have a speaker to hook up. :( I might try another motherboard tomorrow as a a friend has an extra.

Reply to Ace_437

You can get a speaker for that pretty cheap at a local store. If you plan to build more computers it's a worthwhile investment and saves a lot of trial and error, esp with assembling/disassembling/reassembling entire motherboards.

Reply to jevon
Tom's Hardware > Forum > Homebuilt Systems > New System Build > Gaming Comp Turns on for 1 second then off!
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