1. Reboot PC
2. Uninstall recently added software (if you have added anything)
3. Run a Registry-tool
4. Update drivers
5. Do a selective start-up
(Go to the Start Menu and click Run.
Typemsconfig and press Enter.
It will open the Windows System Configuration Utility dialog menu.
In this dialog box, choose Selective Startup and uncheck every option except one and restart your computer.
If you still receive the error message, repeat step 3 until you identify the exact startup option that is causing the error.)