hi, im having a serious problem. i just finished upgrading to vista and now when my pc boots it just shows a rather colorful scrambled blue screen and i cannot get access to nothing, seems like it works cos every few seconds the screen auto freshes and seems like its booting the OS. i assume its the video card driver which is for a 6600gt, any help and advice would be welcome since i dont know how to install a new driver without a monitor Perplexed

edit.

ive managed to sort the screen out, now when vista boots it justs shows a blue screen of death everytime showing an IRQL_not_less_than_equal crap.

trying safe mode but says windows cannot complete the installation in safe mode, and restarts.