Delete Your Temp Files

• Right-Click on your Start bar.
  
• Left-Click on Explore.

• Navigate down to the folder called Temp.
  
• Click on the Temp folder.
  
• Verify that there are none of your documents or needed files inside of the Temp directory. If you see items that you need to save, make sure that you save them to another location.
  
• Click your mouse onto any folder or file that is now listed in the right pane of the Explorer window.
  
• Click Edit in the top menu.
  
• Click Select All.
  
• Click File.
  
• Click Delete.
  
• Empty your recycle bin if you know that all of the files can be deleted.

Delete items in the "run" key in the registry.
Delete your temporary internet files.
Delete your internet history.
Delete your cookies.
Remove programs that you do not need.
Remove programs from your startup directory.
Install and run a spyware remover.
Delete your temporary files.
Defragment your hard drive.