blue screen

[mgsim1982]

Hi ive just installed a new psu 650 watt and 2 7950 gt sli and nearly every time i turn the pc on the blue screen comes up, it mentions my graphics card drivers, ive update my drivers twice has any1 got an ideal what i should do to solve this?

thanks lyndon

 

[mgsim1982]

running it on 1 card now and its loaded up ok

Ive got amd 64 5000
4 gig ram
antec neopower supp

thanx for yur reply

 

[mgsim1982]

just tested both cards seperately and i didnt have a problem.
so i take its the
power supply?

 

[mgsim1982]

its got 2 hard drives and 2 dvd rw in mate
to be honest i aint that clued up to mess around with the leads. so is it more likely to be the power supply, or do i need it looking at?