Error Installing New Driver

I just got my computer and I tried installing a new driver for the 7870, but then the screen blacked out. It stayed like that for half an hour and I don't know what to do.Can anyone help me? I don't want to have an expensive paperweight

Is it still like that or not?

yes, it is still like that.

nevermind, fixed it :p HDMI connection was bad. Switched to VGA and it worked