Similar situation to post from July 10, 2013. Computer runs the same as before but the color is mostly just grey. The problem is CONSTANT. Lenovo G510 computer (originally ran Windows 7 now upgraded to Windows 10) Computer was in trunk of car during extreme heat for 2 days. Also used a 2 prong converter to plug in computer in Europe. Tried uninstalling and reinstalling Intel 4600 graphics card. Didn’t help. Any suggestions?