This is because you have problems in Windows Registry. It is 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. Scan your system for errors with Digeus Registry Cleaner http://www.digeus.com/products/regcleaner/registry-cleaner.html