Hello,
couple days ago i bought a dell optiplex 390(core i3,4 gb ram),it came with 263 watt psu and a low end gpu.
so i decided to upgrade both of them .i bought a 600 w huntkey psu and a gtx 460 v2 1gb 192bit.
here is the problem;i began to experience many crashes to desktop in all most every game, and some times my monitor switch to power save-mode and i ought to restart the pc and some times i get the blue screen error when i start windows, and some times i end up with a black screen on start up ,i formatted my
pc and installed a fresh copy of win7 32 bit,and yes it didn't solve the problem,now once i install the graphic driver (it requires a restart) i end up with a black screen on start up.
PLEASE HELP...........