not sure of your operating system but if its windows xp, vista or windows 7 do the following:
click on start, programs, accessories, system tools & then disc clean up.
it will then run a small screen in the middle of your desktop & then will produce another window on the left hand side.
put a tick in all of the boxes with any value on them & then click ok.
it will ask you if you want to delete files, click yes.(this will not remove any programs so don't worry.
after you have clicked yes, you will get the small window back in the middle, leave this running until it goes off. once it goes off it as completed disc clean up.
colin65
November 2011