BSOD cannot update gfx card drivers :/  

moadip said:

try this Card on another PC maybe it is the PSU :) when it is for the driver try the LV2
with their modded inf file.

well I get the problem with all builds of the drivers post 185.85 and I doubt it's PSU which is a 650watt

olrick said:

I have exactly the same issue with a GTX 260 (Windows 7 build 7100, processor i7, 64 bits)

DONE: I had avast anti-virus, removed it, worked like a charm

I now have.... MS new anti-virus and guess what ? no issue...

you are a star

I unninstalled avira antivir and my bsod is solved when installing gfx card drivers for my 9800gtx+

I was so sold on antivir I never thought to beleive it could be the cause

thanks again you have helped solve my last remaining issue with using win 7