"If you're using Driver Sweeper to clean up drivers on Windows 7, be aware that Driver Sweeper may prevent you from installing service packs. Driver Sweeper wipes Windows 7's built-in display drivers, which are considered as "system files". Service pack 1 and upcoming service packs run integrity check on system files, and if it detects any missing files – it won't let you install and display the following error message: Service Pack Installation Cannot Continue (one or more system components that service pack requires are missing)."
Business software left the office and moved into the home long ago. If you've ever lost the password to Word, ZIP or PDF file in misguided attempt to protect data from prying eyes, this guide to Decrypting Document and File Passwords is a life saver. PCSTATS Tips