Replying to Optimize computer performance

Hey NS, i was wondering if you guys knew of any ways to optimize computer performance. I've done some research and I think I need to clean out my registry keys and just delete some unnecessary files. Anybody know how to manually do this or know of a program that does this? I tried RegCleaner, but i kept getting an error whenever i tried to make a change with my files. I don't want to have to wipe my hard drive. I would like for my laptop to be able to run Pro Tools efficiently because it can not right now. Any programs, tricks? I'm on Windows.