She doesn't know what command prompt is, Tut. Talk to her in fucking English.
1, turn computer off
2, unplug everything off from the USB slots apart from keyboard and mouse (obviously)
3. Restart computer - F8 - By pressing the F8 key right when Windows starts, usually right after you hear your computer beep when you reboot it, you will be brought to a menu where you can choose to boot into safe mode. If it does not work on the first try, reboot and try again as you have to be quick when you press it. I have found that during boot up right after the computer shows you all the equipment , memory, etc installed on your computer, if you start lightly tapping the F8 key you will usually be able to get to the desired menu. Once your in safemode booted up, let me know.