I have T420, and I am facing this strange display problem. I did reinstalled the O/S and updated display drivers. This problem reoccurs more while browsing internet.The O/S is 64 bit, Windows 7 Ultimate. What could be cause of this problem. Help will be appreciated for troubleshooting, if more information is required, I will post it.

http://imageshack.com/a/img560/369/vqjo.jpg
http://imageshack.com/a/img827/7596/zo4c.jpg
http://imageshack.com/a/img829/5885/0w1a.jpg

Admin edit: Changing three inline images to links. Will allow two that are under 50KB. Please also add *PIC* warning in subject next time.




