You must log on to the computer as an administrator to be able to perform a clean boot.
Your computer may temporarily lose some functionality when you perform a clean boot. When you start the computer normally, the functionality returns. However, you may receive the original error message, or experience the original behavior if the problem still exists.
If the computer is connected to a network, network policy settings may prevent you from following these steps. We strongly recommend that you do not use the System Configuration utility to change the advanced boot options on the computer unless a Microsoft support engineer directs you to do this. Doing this may make the computer unusable.
Follow the following steps to perform a clean boot:
Log on to the computer by using an account that has administrator rights.
Click Start, type msconfig.exe in the Start Search box, and then press Enter to start the System Configuration utility. Note If you are prompted for an administrator password or for confirmation, you should type the password or provide confirmatio
On the General tab, click the Selective startup option, and then click to clear the Load startup items check box. (The Use Original Boot.ini check box is unavailable.)
On the Services tab, click to select the Hide all Microsoft services check box, and then click Disable all.
Click OK, and then click Restart.
Note This step lets Microsoft services continue to run. These services include Networking, Plug and Play, Event Logging, Error Reporting, and other services. If you disable these services, you may permanently delete all restore points. Do not do this if you want to use the System Restore utility together with existing restore points.
After you have finished troubleshooting, follow these steps to reset the computer to start normally: