Never had this exact problem, but I hate it when graphics aren't behaving like they should. Few ideas:
1. Make sure the resolution is set to your laptop's recommended resolution.
2. Search the manufacturer's forums (or search the internet) to see if someone else has posted a similar problem - hopefully, there's already a solution.
3. Uninstall the drivers, then install them (download the latest version before you do this)
4. Uninstall the GPU in the Control Panel and then reboot (the computer should recognize the GPU upon restarting and automatically load the drivers).
Hope this helps.