I installed the package of GENYMOTION for windows(7) from their official web. It installed me the Oracle VM VirtualBox and the Genymotion. After that I opened the VirtualBox
Firstly you have to know your video cards name and version. In Windows you can learn by this way
Control Panel -> Display -> Change display settings -> Advanced settings
after that you search google for updated driver and install it. I fix this problem by this way. My video card is Intel HD grapshic 3000 and I download this
driver and fix my problem. I hope you will solve this problem.