I have a computer that is full of crap I barely use, and I've noticed that it runs slower now then what it did when i first got it. I don't really want to reformate it just like that, since I've lost some of the program boxes, meaning I couldn't reinstall the programs.
My question is: Could I copy the computer to an external hard disk, and reformate the original hard disk, and then, if I wanted to use one of the old programs, just plug the external disk into the computer and run the program?
OS: Windows 7
Brand: HP (hewlett packard)
Name of external hard disk: Seagate GoFlex
Thanks for your help