I tend to try the easy possibilities first.
I would uninstall the current video drivers, via Device Manager...then reboot the system and reinstall same drivers. They could be damaged and the effects that you mention could all be due to damaged video drivers.
Please download MiniToolBox
, save it to your desktop and run it.
Checkmark the following checkboxes:List last 10 Event Viewer ErrorsList Minidump Files
Click GO button, wait a few seconds, copy and paste the onscreen results into your next post.
Edited by hamluis, 01 June 2012 - 04:45 PM.