New rig - fail <1 sec after boot, fans work!

[icesaint]

Hi all! This is my 3rd system build ever (since 2003), and the first I have had any show-stopping issues with. Specs/parts listed at bottom.

I appreciate all the help you guys contribute. I honestly don't know people like me would survive without forums like this to go to.

Anyways, what happens:
Upon startup, *all* fans move and light up, etc. for about half a second before computer shuts itself down. No smoke or beeping or anything else, and it won't start back up for a half second until CMOS or Battery is cleared. I tried switching to the stock Intel heatsink - no dice. I also tried looking at the processor pins but they looked fine as far as I could tell...and it seemed to go down smoothly enough with the little lever.

My ?guesses?:
Bad motherboard?
Is RAM messing with me?
Too much Arctic Silver?
**I have no idea what I'm doing with the SATA Hard Drives. Always used IDE. Just kinda plugged 'em both in and was hoping to 'figure it out'. Should I unplug one or both?

I wanted to see if this was an easy fix before I spent another several hours trying things that didn't seem relevant.

Thanks a million :)
-B


MSI NX8600GTS-T2D256E-OC GeForce 8600GTS 256MB 128-bit GDDR3 PCI Express x16 HDCP Ready SLI Supported Video Card - Retail

Rosewill RP550V2-S-SL 550W SLI Ready-ATX12V V2.01 Power Supply - Retail

Sony NEC Optiarc 20X DVD±R DVD Burner with LightScribe Black PATA Model AD-7191A - OEM

GIGABYTE GA-P35-DS3L LGA 775 Intel P35 ATX Intel Motherboard - Retail

Rosewill RCX-Z3 92mm Ball CPU Cooler - Retail

Seagate Barracuda 7200.11 ST3500320AS 500GB 7200 RPM SATA 3.0Gb/s Hard Drive - OEM

Intel Core 2 Duo E6750 Conroe 2.66GHz LGA 775 Processor Model BX80557E6750 - Retail
Western Digital Raptor X WD1500AHFD 150GB 10,000 RPM Serial ATA150 Hard Drive - OEM

Sony NEC Optiarc 20X DVD±R DVD Burner with LightScribe Black PATA Model AD-7191A - OEM

OCZ Platinum Revision 2 2GB (2x1GB) DDR2-800 CL 4-4-4-15 ATI CrossFire Certified Dual Channel Kit Retail OCZ2P800R22GK

Antec Nine Hundred Black Steel ATX Mid Tower Computer Case - Retail

[tumbleweed357]

icesaint:

I had the exact same symptoms also on my 1st build. Fans would run or try to run for approximately 1/2 second and then off. Nothing. My power supply had went out and I bought a new one and this happened. Never suspected it 'cause
it was new one. I posted my problem awhile back. Good luck.

[The Wise Monkey]

I would suggest that your PSU is faulty - do you have a spare you can try out?

[Jamie Nixx]

PSU is either faulty or the CPU is overheating.

[The Wise Monkey]

CPU wouldn't overheat that quickly tbh.

[Jamie Nixx]

Depends on whether the cooler was in contact at all, highly unlikely though, more than likely a faulty PSU.

The only other thing i can think of that would make a PC turn off so fast is the CPU power connector not being plugged in.

[dmethoxibit]

test the psu too see if it works and then the mobo and so on and also make sure that ur hard drive is plugged nito S-ATA drive1. ur mobo manual should have the info

[icesaint]

thanks for the tips guy. but how can i figure out if my mobo is bad though? ill try a different psu and some of that other stuff and check back. Anyone else think its a bad PSU?