Is This PSU Failure?

[AsianGlow]

Hey Forum!

I just built an i7 PC, but it will not fully power up.

I plug it in, turn the switches, hit power...

-Fans whir, HDD's churn, lights blink but then...

*pewwwww* Powers down, OMG oh it turned itself back on!

-Fans whir, HDD's churn, lights blink but then...

*pewwwww* Powers down & it continues like this nonstop

It only stays on for less than 10 seconds... Is this PSU Failure?

---Specs---
*ATX - NZXT M59 Case
*CPU - Intel Core i7-920 2.66GHz 1366
*GPU - XFX Radeon HD 5770 1GB DDR5 PCIE
*HDD - Western Digital Caviar Black 1TBx2 7200 RPM
*MOBO - EVGA 3-Way SLI with Tri-Channel DDR3
*PSU - Corsair 750-Watt TX Series 80 Plus
*RAM - Crucial Tech 4GBx3 240-pin DIMM DDR3
*SYNC - Cooler Master V8 CPU Cooler

 

[ekoostik]

First, welcome to the forums.

I wouldn't suspect that PSU without checking some other things. Here's a good checklist to start, if it doesn't solve your problem report back what you tried: http://www.tomshardware.com/forum/261145-31-read-posting-boot-problems

 

[JohnnyLucky]

+1 what ekoostik said. The checklist is a very useful tool.

Sounds more that the BIOS is constantly rebooting. It could be something simple like one of the BIOS settings.

 

[jsc]

Clear the BIOS. Your manual will tell you how. That may help.