| What type of computer, and what operating system are you using?
If you have gone through, and deleted everything personal, and emptied the recycle bin, you can use a program called CCleaner.
If you do a google, it is a free download and is very effective in over-writing all the blank space on your disc.
If you have the System Recovery option with your computer/op sys, I recommend you recover to out of box state, and then run the CCleaner as a back up.
Good Luck to you! |