First, some technical details:
Running Windows 8.1 64 bit with 4Mb RAM on a Hewlett-Packard which of course did not come with any disks and none were created when the computer was purchased.
Someone in my office was having trouble with her printer and for some reason I can't figure out, she googled Brother Printer Help. She found some site called global something or other, contacted them and followed their directions to download TeamViewer and allowed them in to her computer. After several hours of them running her around in circles, she finally hung up. She couldn't shut down her computer the normal way so she forced a shut down using the power button. When she came in the next morning and fired up her computer it was password protected. This password window does not look like the typical one. It's more generic. Obviously she allowed in some ransom ware. We cannot start in any mode without getting the password request. I can get to system repair but when I try to get to system restore I'm asked for an administrator password and there is none.
Anybody got any ideas?