How do i get lost computer memory when i uninstall a game?

When i download a game then i unninstal it the game still leaves some memory behind. How do i get rid of that extra memory? So i can get all my memory back.How do i get lost computer memory when i uninstall a game?You need to go into the registry (go to "run" and type "regedit") and delete all of the registry files for the game. You also need to delete any remaining game files from your hard drive in My Computer.

Careful what you delete though - you don't want to screw up your computer.