I killed my GPU

[Mako321]

Overclocked my 5770 with Afterburner after unlocking third party overclocking or whatever, my hand must've slipped when I was using the clock speed slider, because the thing is resetting my display drivers and I can't see a Dang thing on screen. Any way to fix this? D: If it helps, I have an onboard graphics processing whatever on my mobo that I could use if I removed the 5770 for getting anything to show up.

edit
I think it's fixed, went into safe mode and uninstalled afterburner. Boots up now, no problems.