Windows 7 Safe Mode loads only necessary drivers and software while the computer is booting up. Loading only necessary drivers and software prevents the computer from booting up programs that are causing errors on your machine.Once you are finished working in Safe Mode, restart your computer to boot your HP Pavilion up normally.lick the Start icon on the Windows taskbar. Click the arrow to the right of Shutdown, then click Restart.. Press and hold the F8 key while your computer boots up to access the Advanced Boot Options menu.