# When booting your computer, press F8 to bring up a boot menu
# Select Safe Mode with Command Prompt
# Select the operating system to start (if you have multiple operating systems installed)
# Log on with an account that is a member of the administrators group
# At the command prompt, type %systemroot%\system32\restore\rstrui.exe
# Press Enter
# This will start the "Welcome to System Restore" screen. Go through the steps of the Wizard and follow the instructions to restore your system to a previous restore point