Sorry for the stupid question but I can't change the user when trying to log in on the Surface Pro. One of the IT guys from work let me borrow a Surface Pro to work/play with over the weekend and was told I could use my normal work user name and log in to sign in. When I turn it on, someone else is the user name and I can't seem to change it to put in mine. Normally I can hit control, alt, delete to get that option but nothing happens. I tried to contact him but he is gone this weekend and next week so thought I'd give a try here. Thanks