If it is a windows use the Ctrl, Alt, and delete keys at the same time. It will bring up program manager with a menu that will have several items on it. You can "unfreeze" it by ending a program or you can shut it down. If it is Apple go up to your Apple Icon at the top of your screen and highlight "shut down."
delete Windows Vista :D
Turn unit off
Restart or replace it
TF2 stops responding? sounds like a corrupt file, do you have non default skins or sounds installed. try re-installling steam
you must open the single player commands folder and open the game from there and it should work
You need to scan your computer for spyware .
bromine
the fan has stopped completely and the laptop should be serviced before there is heat damage
Your speaker could have blown.
there could be two reason 1) Driver issue 2) hardware fault
The process in which an animal stops responding to a repeated stimulus is called habituation. Broadly defined, stimulus results in a reaction.
Many laptop users have this question and we will answer it right now: The answer is: YES and NO, it depends on the situation. Having a battery fully charged and the laptop plugged in is not harmful, because as soon as the charge level reaches 100% the battery stops receiving charging energy and this energy is bypassed directly to the power supply system of the laptop.