Your PC crashes for no apparent reason. You keep receiving error messages and don't know why. Your PC runs much slower than when you first bought it. And you are really frustrated by your computer's bad performance. Sounds familiar?
Problems with the Windows Registry are a common cause of Windows crashes and error messages. Registry problems can occur for many reasons, including references left behind after uninstalling; incorrect removal of software; missing or corrupt hardware drivers; or orphaned start-up programs. This will significantly increase the Registry size and slow down your computer, because Windows will need more time to load, search, and read data from the Registry.
The solution we've used recently is Digeus Registry Cleaner. Really works - 1615 errors found and fixed.