First, clean off temporary files that are being stored and not used any more.
Go to Start
FindFiles
or Folders
In the dialog box that appears, type *.tmp
Make sure you choose (C:) for the Look in: box
Next, you will look for Cookies:
Note: If the files
appear as icons rather than a list like above, choose ViewDetails
and it will change to a list like the one above.
Again, File
Delete
Don't forget to empty the Recycle Bin.