Dear Computer experts,
                                    I have a PROBLEM. Whenever I boot my PC and i watch a movie or play a game the computer suddenly the computer SWITCHES in to Power Saving Mode (when I'm doing something too.) i can't get the screen back. PLEASE help me. you guys are really great and ive been helped by a lot of people in the past. pls help!!Which OS do you have?
The power saving mode makes sense for laptops on battery power. If you do not use the keyboard or mouse for a time, it goes into the power saving mode, even when the computer is really doing something. Kind of dumb, pun that is the way they made it.

So, either wiggle the mouse every ten minutes,
or turn off the power saving stuff.

The link below is for Vista and Windows 7.
http://www.howtogeek.com/howto/windows-vista/disable-power-management-on-windows-vista/
In Windows XP it is part of the screen saver settings.
Dear Geek,
               Thanks for the help man. But forget wiggling the mouse I am moving it around the mousepad frantically and clicking it like crazy (counter-strike, you know) and still it goes into idle mode. Thanks anyway. os = 7 Its a computer attached to the wire stuff, not a laptop with battery. BTW nice site you got there howtogeek  Also, the computer when the PC goes into idle when it is idle, it the screen comes back when i shake the mouse. The permanent problem happens only when im playing a game. anyways, i followed your instructions in the link. dyou think it will SOLVE my problem?