i clicked disk clean up... it says disk clean up c: at the top, with a load of boxes to click on. what do i tick and what do i not click to clean up so as not to do something that might do something bad if you know what i mean?
With disk cleanup your fairly safe to use most of the options. You can happily remove temp internet files, temporary files, recycle bin etc. It wont delete anything your pc needs to run.
