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Sudden shut down during initial bios setup

Last response: in Systems
March 24, 2012 12:22:43 AM

Hello, I have recently finished building my first computer. whenever i turn it on it shuts down within 30s-3 minutes. i have not been able to get past the main bios screen.

Here are my specs:
Gigabyte z68ap-d3 motherboard
intel core i5 2500k CPU
120 gb ssd
2x4 gb corsair ddr3 RAM
Ultra 550w psu

I have tried going through the bios setup about 15 times and it keeps turning itself off.

Any ideas on what i screwed up on?
a c 113 B Homebuilt system
March 24, 2012 12:35:46 AM

We have a great tool for that if you will use it properly:

But if you would like an educated guess I have a few.

-Improper heatsink installation
-Failing PSU

Ultra made a few good PSUs at one point, but most of them are very poor or complete junk. They don't even bother to send them to real reviewers any more.