Control Key stuck (unable to type)

use this when unable to type because shit, ctrl, or alt keys are staying pressed.

Control Panel > Ease of Access Center

1)Click on "Make the keyboard easier to use"

2) Under "Make it easier to type"
    - make sure the "turn on sticky keys" is unchecked

3) Under "Make it easier to type"
    - click on "set up Filter Keys"

4) Uncheck the box that says "turn on filter keys when right SHIFT is pressed for 8 seconds"

5) Click Apply

6)Click Ok


all done


source: http://www.howtogeek.com/howto/windows-vista/disable-the-irritating-sticky-filter-keys-popup-dialogs/