I have a HP 6545b laptop running W7 Pro 64bit. I've recently rebuilt the machine and it's running the latest HP drivers for all hardware.
When the computer is locked, whether by my screensaver or by me, and then unlocked, a blank white rectangle appears in the top left corner of my desktop.
This white rectangle does absolutley nothing. If I try clicking in the rectangle nothing happens, either left or right click, and the only way I can find of getting rid of this rectangle is by restarting the laptop.
I have already run both VIPRE and Malwarebytes and the computer came up clean of infection. I'm also running Avast anti virus and the computer sits behind a company or home firewall.
Does anyoine have any suggestions on how I can find out what's causing this rectangle and how to stop it appearing.
Thanks in advance
Phil - GMSchool