I need help. I received the free upgrade to 10, so I don't have a disk to use. When I boot up I get to the final screen with the Windows logo but no login section. I can't get to safe mode, won't do it. Dell tells me I have to save everything to my Passport stand alone hard drive, wipe the hard drive clean and reinstall, which they will help me with, since I have a new Dell. Isn't there anything I can do to get logged in? A blind type of my password doesn't work. I was told to press shift and start to get to troubleshoot. Where is the start button, can't find it? It's not on the key board. Any suggestions?