- 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 confirmation.
- 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.
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.
- Click OK, and then click Restart.
For more information about how to perform a clean boot in Windows 7 and Windows Vista, reference the Video: How to do a clean boot in Windows
After the computer is restarted, you will have a clean boot environment. Then, do one of the following, as appropriate for your situation:
- If you could not install or uninstall a program or an update before you performed the clean boot, try to install or uninstall the program or update again.
Note If you receive the "The Windows Installer service could not be accessed" error during the installation or uninstallation, follow How to start the Windows Installer service when system services are not loaded, and then install or uninstall the program or update again.
- If the installation or uninstallation is successful, you have resolved your issue. Follow How to reset the computer to start as usual to reset your computer to the normal startup.
- If the installation or uninstallation still fails, that means this issue is not caused by application or service interference. You may have to go to Microsoft Support for more specific support.
- If you could not run a program before you performed the clean boot, try to run the program again.
How to reset the computer to start normally after clean boot troubleshooting
After you have finished troubleshooting, follow these steps to reset the computer to start normally.
- Swipe in from the right edge of the screen, and then tap Search. Or, if you are using a mouse, point to the lower-right corner of the screen, and then click Search.
- Type msconfig in the search box, and then tap or click msconfig.
- On the General tab, tap or click the Normal Startup option.
- Tap or click the Services tab, clear the check box beside Hide all Microsoft services, and then tap or click Enable all.
- ap or click the Startup tab, and then tap or click Open Task Manager.
- In task manager, enable all of your startup programs, and then tap or click OK.
- When you are prompted to restart the computer, tap or click Restart.
- Click Start, type msconfig.exe in the Start Search box, and then press Enter.
Note If you are prompted for an administrator password or for confirmation, you should type the password or clickContinue.
- On the General tab, click the Normal Startup option, and then click OK.
- When you are prompted to restart the computer, click Restart.