Can't get past POST..

[RedTen]

Howdy

Hoping you guys can help me out. I built a machine for my father in law and he's having some issues. Im at a bit of a loss as to where to start with it.

Its been working fine for months but recently this problem has occured. It won't pass POST at all now.

The specs are..

£459.99 x 1 - *OVERCLOCKED* Intel Core i7 920 2.66Ghz (Nehalem) @ 3.33Ghz Gigabyte EX58-UD3R Intel X58 OCZ 6GB DDR3 PC3-10666C9 1333MHz Gold (3x2GB) Triple Channel DDR3 Noctua NH-U12P Bundle
£145.21 x 1 - Acer X243H 24" Widescreen LCD Monitor
£74.77 x 1 - XFX ATI Radeon HD 4850 "XXX Edition" 512MB GDDR3 TV-OutDual DVIHDMI (PCI-Express) - Retail
£72.16 x 1 - Corsair HX 520W ATX Modular SLI Compliant Power Supply
(CMPSU-520HXUK)
£69.99 x 1 - Lian-Li PC-60B PLUS Aluminium Midi-Tower Case - Black (No PSU)
£69.56 x 1 - LG GGC-H20L Blu-Ray Reader & HD-DVD ROM Serial ATA Drive - Retail
£53.03 x 1 - Logitech Cordless Desktop MX 3200 Laser (967688-0120)
£42.60 x 1 - Western Digital Caviar Black 500GB SATA-II 32MB Cache - OEM

Excuse the prices, I grabbed it from the OC shipping email and I'm being lazy.

The computer turns on goes to POST but then turns off and reboots after the memory check. It says memory check OK but then tests the frequency possibly and the screen goes blank, no signal and loops. It gives a single beep also.

I've tried the key commands to reset bios but it doesnt seem responsive.

I'm guessing motherboard?

I've tried one stick of RAM at a time and same issue.

Please help, any suggestions welcome

Thanks

 

[mart280]

Try resetting the cmos, have a look in the motherboard manual and it should tell you how to do this, usually involves putting a jumper on two pins to reset the cmos.

 

[RedTen]

Try resetting the cmos, have a look in the motherboard manual and it should tell you how to do this, usually involves putting a jumper on two pins to reset the cmos.

Thanks

Does leaving the battery out for a few hours do the same thing out of interest?

 

[honosuseri]

Yes you can pop out the battery for a min or so but imo it's easier to use the jumper. It is labeled on the mobo (CLR_CMOS) and far less fiddly than unclipping the battery.

 

[RedTen]

Try resetting the cmos, have a look in the motherboard manual and it should tell you how to do this, usually involves putting a jumper on two pins to reset the cmos.

I owe you an eBeer. Thanks.

It boots as normal but having had a google it appears some mobos suffer from this occasionally so may have to swap it out at a later date.