Are you working with a value added reseller in obtaining the license? If so, they need to get you some help. I suspect you are having hardware problems.
In the meantime, you can try disabling the OpenGL mode in Creo. Go to File>Options>Configuration Editor and Find "Graphics" and change that option to "win32_gdi". Add/Change - Close. Now the win32 driver is active and see if this fixes anything.