GA-X48-DS4 problem starting up

[Promethium3000]

Hello, recently i just put together my first computer and for awhile it was working fine, but recently I have had trouble with it starting up. The problem is that when I start the computer up it goes into a reboot loop and does not start up, it just continues starting and shutting off right before where it would usually POST. Originally this problem occurred randomly, so I would be able to turn off the PSU and try again and it would work. Just recently no matter what I did the computer would not start at all, regardless what I did. I then proceeded to clear the CMOS and the computer started up normally, but after a few trial restarts the computer once again went into the reboot loop. The parts list is as follows (none of it is overclocked):

ga-x48-ds4
intel q9550
corsair 4 gb (2gb x2) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400)
VisionTek 900244 Radeon HD 4870 512MB
CORSAIR CMPSU-750TX 750W ATX12V / EPS12V

Any help would be greatly appreciated, thank you.

[Lsdmeasap]

Re: GA-X48-DS4 problem starting up

Can you get in the BIOS at all now, or are you fully stuck in the loop?

If you cannot, please try it with only 1 stick of ram in slot one. And also if you can please run Memtest86+ in a different PC on those ram sticks one at a time >>>
Memtest86+ - Advanced Memory Diagnostic Tool

Do you know which BIOS you are using, just wondering?