Logon to Windows with Administrator rights.
Click Start > Control Panel.
Double-click Administrative Tools.
Double-click the Services icon.
or
Run-> services.msc
Double-click the service that you want to stop or start.
When the Service Properties window appears, do one of the following:
* If the service is running, click Stop the service.
* If the service is not running, click Start the service.
Click OK.
Safe mode is an alternate boot method for Windows operating systems that makes it easier to diagnose problems. The only startup programs loaded are the operating systemand drivers for the mouse, keyboard, and display modes display. It is often possible to get a system to start in safe mode when it won't start normally. To start in safe mode, press the F8 key while the system is booting and select "safe mode" (or the safe mode option you want) from the menu that appears.