My Rig:

ABiT NF7-S Mobo
AMD Barton 3000+
Radeon 9800 (non pro)
1GB DDR Kingston RAM
80GB WD HDD w/ 8mb buffer
Windows XP Professional

My Problem:

When I turn on my computer, and Windows starts booting up, two seconds after the XP logo comes on the screen, I get the blue screen that reads, "A problem has been detected and Windows has been shut down to prevent damage to your computer. UNMOUNTABLE_BOOT_VOLUME. Technical Information: ***STOP:0x000000ED (0x86335900, 0xC0000032, 0x00000000, 0x00000000)"

What i've tried:

Restarting in Safe mode
Restarting with last known good configuration
Restarting with fail safe bios settings
Reformatting (ntfs quick) and re-installing XP pro

After re-installing XP it was running it for an hour without any apparent problems. I came home last night and powered it on, and the problem came back. I suspect that my HDD may be faulty.

Anyone have any quick fixes I could try??