BSOD can't even load XP in safe mode..

I was playing football manager for 3/4 on a network game, then suddenly from nowhere i got a BSOD, saying "page_fault_in_nonpaged_area" i rebooted but now i get it as soon as i click on any of the options in the start up, "safe/safe with network, last known working" etc, in safe mode windows loads and i can click the "admin" log in bit, then it crashes instantly with the same BSOD (i think it doesnt stay on screen long enough to see".
I did build my PC about a month ago and have had no problems at all until now.
My specs are;
Mobo: Asus A8V-E
GFX: Windfast leadtek Geforce 6600GT
Ram: 1gig dual channel corshair platinum series
PSU: 750W
CPU: 3800+ Athlon

i havnt overclocked it or anything of the sorts, and i cant run any diag due to not being able to access windows. I have tried unplugging the HDDs i have, (Maxtor 60gb IDE and Maxtor 200gb SATA) ive tried both combo's of these and same thing.

Any help would be much appreciated.

Will

Update: I downloaded the ram checker but it just kept asking for system disk,
I then tried to run the windows repair facility but i get another blue screen, this time saying "A driver corrupted pool memory used for holding pages destined for memory"