If your computer is acting up and not running right then there’s a good chance that the registry is corrupted or cluttered with obsolete and invalid files and folders.  This happens mainly as a result of the incomplete uninstallation of software and hardware.  The registry is very complex and you shouldn’t attempt to fix it on your own.  Otherwise you stand a good chance of making problems worse or even creating new problems.

If you’re looking for a great program I suggest checking out a RegCure review.  RegCure is the program I personally use to keep my computer streamlined and running well.  RegCure helped me improve the boot speed of my laptop by quite a bit.  Also, if you’re looking to speed up a slow computer I highly recommend getting some RAM.