Windows is most versatile and powerful operating system. Sometimes windows stops working properly. This happens when you installs new softwares or new hardware. When you installs new hardware or device suddenly your computer crashes. In hanged situation you need to restart your computer, after restarting your computers gets on in a new look actually this new look is a safe mode view of computer. In safe mode many features of windows stops for shortwhile for example in safe mode your cdrom drive disappears also the sound of your system don't work. Windows loads itself into safe mode when your windows stops working properly.
safe mode in vista perform following temporary changes to windows
You cdrom drive disappears
Your screen colors automatically sets to 16 bit or lower.
To sart windows vista in safe mode there are different methods. We will discuss two methods for start in safe mode
 
1.  Restart your computer, on startup screen start pressing F8 key after pressing two or three times windows advance boot option will appear. In advance boot option select safe mode with the help of your keyboard then press enter. Then select the administrator profile to start the windows. Your computer is now in safe mode.

2. You can enters into safe mode window using the normal windows options. To do this click on the start button on the taskbar, in the search box type the following command msconfig and press enter. System configuration window will open in this window click on boot tab and then select safeboot after this alick on apply and then press ok. your computer will ask you to restart, click on restart to log into safe mode.

Safe mode view has limited functions and it uses administrative control of windows.