Josh. said:
Wow, I had no idea.
I'll try and format it but my computer has way too many things I need on it.
If I can't format it, I'll just try and delete the programs/items I don't need.
Thanks for the help Jas0n and all.
That's why you buy an external hard-drive, they're really cheap nowadays.
Just back up all your pictures, documents and applications that you can't re-download or install from a disc easily and then reformat, then plug your hard-drive in your clean computer and put them all back on. It's pretty simple.