hmmm this is a strange one to say the least. if you are at your wits end you might want to just do a complete reboot of your system and that will fix it for sure, how old is your computer?, have you made sure to update all of your drivers, graphics card etc, cpu, anything else that needs it?..
Can you at all remember from when it was working fine to when it didnt if there was anything you did, download any programs?, new anti virus or firewall?... its a hrad one to pin point as I have not heard of this issue before.
If you did uninstall the program fully and the loaded it again i'd say it is hardware issues ( being your system) and not the program its self.
Do my a favour and [please go to your "control panel" and then go to system for me. In there it will tell you what system you are running, for example it should tell you your graphcs card and what cpu you are running.
You could try a "system restore" going back to the point where the software was running fine but that's prolly a long shot.