Recently when I play games, i.e. solitaire or go on youtube to watch a movie suddenly a checker image covers the screen. It consists of small squares, dark and light, just like a checker board. I have to close it down and start over as it impedes the picture. Any suggestions...I have tried adjusting NVIDIA settings but did not work.

Hi I think you have wrong forum. This one is for Exchange 2013. Please search on this page to find the forum related to your OS: http://social.technet.microsoft.com/Forums/en-US/categories Steve

Hi, First, I would like to check whether your operation system is Windows 7. Meanwhile, please give us more detail information such as screenshot about this issue. In addition, I suggest you temporary uninstall the security software and see if the issue can be resolved. Also, try to boot to Clean Boot mode to check whether this is affected by the third party tools. Besides, if the issue did not occur before, try system restore to restore the system to the date before the issue occurred. Hope this helps. Vincent Wang TechNet Community Support