How do i put my pc in safe mode

When you turn it on, you'll notice there are two booting sequences your computer follows - the first is your BIOS, which usually is indicated by some sort of logo of the manufacturer, and then Windows proceeds to load. You want to hit F8 just before Windows starts loading (or just hit it repeatedly after your computer starts up) until a menu pops up - there, you are given the choice to boot in safe mode.