Hi, just after installing ccc 11.2 and playing StarCraft II, a vertical blue thin line appeared on my screen which i just bough by the way (Samsung LED 23"), my vga is Radeon HD 5770......i dont know if its just a coincidence that this line appeared just after installing the new 11.2 Driver...and i dont know if drivers can really ruin monitors!!!!!!!!!!!!!!
Could be a few things, but I would start by replacing the VGA or DVI cable (after double checking it is securely plugged in and screwed in).
If that doesn't help, then either the monitor or the GPU is faulty. I would probably hazard to say the monitor - and if it's new, you would definitely get an RMA for it. I'm not really sure how to trouble shoot it beyond plugging it into a different computer.
I suppose it could be the specific output. Maybe if you were to use HDMI instead of DVI (or whatever you're using) it would be fixed - but if the original cable wasn't the problem then that still would indicate a hardware issue specifically related to one output.