Black Screen- Compaq Presario CQ61?

I'm using my tv right now with it, it works fine hooked up to a TV. I've tried everything I know of. When the laptop first starts up, It flashes the red compaq screen, then goes black. Flashes the user login screen, then goes black 2 sec later. When I do the fn+f4, the screen flashes back on, everything looks cool, then 5 seconds later it goes black again. It's not just the light, it goes completely off. (Just on the laptop, external monitor works) I've tried restoring back to factory settings, recovery, and I'm not getting anywhere! I've even tried that black screen fix by Prevx. Oh and I also tried turning the laptop off, holding the power button, etc. It has windows 7. CQ61 I think is the model.