New PC. Power cycles on and off, no video response.

[RJ Trepmal]

I'm putting together the components for a new PC and I'm having a bit of trouble.

Mobo: Abit P35
Video: XFX Geforce 8800 GTS 320MB
CPU: Intel Core 2 Duo E6600
Mem: 2x 1GB OCZ PC6400 DDR2
PSU: Antec NeoPower 480 Watt

I've tried reseating all the components and using each DIMMs seperately, but to no avail.

It will start to power up for a couple seconds and then shut off. After a few seconds it will repeat the cycle.

The power supply only has a four pin connector for the Mobo instead of the recommended 8 pin, but the manual says that this should still work. I did notice too that this PSU is only rated at 18A on the main 12V rail. This seems to be too low so I've ordered a PCP&C 610 Watt that runs at 49A and has the right connectors. Would the PSU be enough of a reason to prevent me from getting a video signal or should I be looking for a problem with one of the other components? It will be a few days before I get to try it with the new PSU and I hope to have this thing up and running in time for Crysis.

 

[robisbell]

well, right off I have a feeling it's the PSU is underpowered, and you came to that conclusion too. get the new PSU, and let us know how it goes.

 

[gtechie]

When we build new gaming pc's for customers, we always suggest a PSU with at least 700Watts when using a 8800 video card. Dual 8800's, we suggest at least over 900watts but some customers actually go with 1000-1200watt PSU's. Anyway, like robisbell said, your PSU is underpowered. Our recommended wattage is maybe a bit high but we don't want the PSU running at full or close to full capacity all the time, know what I mean. It's basically safer to go higher than to have barely have enough and run the PSU too hot.

 

[mattbesquare]

Solution in this thread: http://forums.anandtech.com/me...id=2121447&STARTPAGE=1

 

[robisbell]

I don't think his problem and that one are similar.