Hey guys, I was wondering if you could help me with this error. I've looked through simliar threads on the forum but have failed to solve my problem

Recently my motherboard died, and I had to get a new one. After installing the new motherboard, I attempted to do a fresh reformatt but repeatedly get a blue screen error:
"Page_fault_in_nonpaged_area", followed by "0x00000050"

I have no idea how to solve the problem, or what is even causing it, I just want to reformatt!
At first I thought it was a RAM problem, but when I stuck just one single 256mb RAM, I recieved the same errors. I've also checked the RAM timings in the BIOS, and they seem perfectly normal, not high.

My current PC specs:
ASROCK Socket A K7NF2 - RAID
AMD Barton 2800+
1024mb (2x 512mb) PC3200 RAM
Seagate 80gb SATA HDD

Any help at all would be great.

Here are my minidumps:

Any help? Please?

Thanks for the tremendous level of help you've given....