Windows 10

Type regedit in the Cortana Search Box

Click on the regedit command that comes up

Windows 8.1

1. Right Click on the Windows Start Icon
2. Click on Run
3. Type regedit and hit enter

Windows 8

1. Move the mouse in to the bottom left hand corner
2. Click on the Start Menu Icon
3. Type regedit and hit enter

Windows 7

1. Click on Start
2. Type regedit in to the search box and hit enter