Do you have a graphics card or is it onboard (integrated) graphics?
If it is a card, while in safe mode, try to unistall the drivers via device manager, then reboot in regular mode. Windows default driver should work to get to the desktop. At desktop install the correct driver package from Nvidia or ATI (or whatever other card maker you have).
If it is onboard video, in safe mode, try to get the latest motherboard drivers and install them. Reboot in regular mode to try that out.