Another Computer issue thoughts

[Pdwe]

I downsized my old computer took it to a local shop.

Specs

CASE: Lian Li 8nwx
Fans: two 120 mm
PSU: Antec truepower 650 watt
MB: Giga-byte EP 45T
CPU: Pentium 4 3.8 prescott socket 775 lba Retail use standard cooler
Ram: Corsair 4 gb 1333 DDR3
Video Card: ATI x700 pro pci-e
Soundcard: Soundblaster Audigy 2 zs
Plextor dvd-rw
Vantec trayless hd hotswap
Vantec trayless hd hotswap

The issue I notice it I hit power button on it starts for two seconds turns off then turns on again for a few seconds turns off after 4 times it stays on. Fans are going. The repair guy thinks my soundcard is cause and powersupply.

any ideas why this is happening?

Thanks

 

[Shadowssong]

http://hardforum.com/showthread.php?t=1349426 then post back your results after that and we can help you further.

 

[Pdwe]

Replaced soundcard and still having issues.

 

[engiNURD]

sounds like you need a BIOS update. sounds like the restart bug that affected many gigabyte boards since the P965 days.

 

[Pdwe]

Seems like the reboot bug happens a bit later then what happens to mine. I don't see anything on the screen at all until it stops doing it usually 4-6 times. Sometimes it does fine the first time.