Clean-Up and Tune-Up
First Ccleaner http://www.piriform.com/ccleaner
Then Malwarebytes http://malwarebytes.org
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Run Error Checking
Right click on C: in (My) Computer
Properties
Tools
Check box for Error Checking
Reboot
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Run Disk Cleanup
Right click on C: in (My) Computer
Properties
Disk Cleanup button
After it Calculates how much space you can recover,
Click on the More Options Tab then
System Restore Cleanup Button (this can recover a lot of space)
Windows 7
Clean up System Files Button
More Options
Clean up under System Restore and Shadow Copies
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Control Panel
Add/Remove Programs
Look at Programs you no longer use and uninstall them. ie Trialware and programs you installed but don't use anymore.
(Don’t if not sure - Windows will say you have not used it in a while but it may be an important program)
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Right click on C: in (My) Computer
Properties
Tools
Disk Defragment
Spray out the vents with a can of compressed air.
Open the laptop and remove the fan to get to more lint and dust or take it to a shop.
Use a Cooling pad.
http://www.bing.com/images/search?q=laptop+lint+cooling+fins&qpvt=laptop+lint+cooling+fins&FORM=IGRE
Run Gamebooster before you load a game.
http://www.iobit.com/gamebooster.html