Using my pc as usual today (Win 7 pro) when suddenly a pop up message appeared saying Cleartype display and at the same time a line appeared on the monitor with text to the right obviously not in Cleartype and to the left using Cleartype. The line keeps scanning back and forward across the screen.
First I went into Cleartype settings and went through the setup again - no change! Back into settings and selected the first screen box to stop Screentype finshed and - no change! So now I decide just to give up and do a reboot and the line continued until the pc screen closed down AND then reappeared as the machine booted up through the bios and into Windows!
Does anyone have an idea what is going on and how to stop it?