I built a PC earlier this year using a EP45-DS3R MOBO, Quad Core Intel Q6660, 4 gb Corsair RAM, 1 GB Samsung Spinpoint HDD & Matrox Millennium P690 PCIe Graphics Card.
I'm running (or was running) Windows XP Professional SP2.
Everything was fine until one day last week I turned the machine back on and it just kept cycling - showing the splash screen and then restarting - never got to POST screen.
I have tried disconnecting everything from the MOBO (incl Hard Disks, floppy/CD Drives) & also tried a different Graphics card that I know works.
I also removed CMOS battery overnight. Still no joy. It never gets to the POST screen so I can't do anything with it.
I swapped the Hard Disks to another PC (with Gigabyte GA P35 S3G MOBO) and everything works (once I'd installed drivers).
Help!! Does anyone have any ideas?