BSOD - graphics / memory?

[tatts]

i keep getting bsods when playing cod2, specially when on ts.
id say 70% are nv4disp.dll plus ive had, 0x00000050 .. 0x0000000a .. 0x0000000d1 & today for the 1st time i got DXG.SYS

do you wreckon its gfx drivers, gfx or ram?
also, what is best drivers for my 7800gt? ive had the 83.xx drivers & atm 81.98, i even formatted yesterday so everything is fresh

if i dont find a cure ill guess ill have to go x1800xt or x1900xt

 

[tatts]

i put it all back to stock speeds before formatting but its still doing it, jus got a 0x000000a after 2 hours of cod2 with 84.12 drivers
i was thinkin it was something to do gfx has most of them are nv4disp.dll bsods
suppose the geil will have to go back