Hi my name is ***** ***** I will be the expert working with you today to help resolve the problem you have posted.
I am sorry to hear that you are facing problem with your computer. Push and hold down the power button for 10 seconds on the computer the computer must shut down.
Wait for 3 to 5 mins and power it back on let me know on which screen you get stuck or it accepts the windows password.
on the sign in page press and hold down the shift key and click in the power button on the bottom righthand side of you login screen.
do you see sign in option clcik on it and select the other option to select pin and enter a new pin and let me know if you can login with that.
do you use skype?
Hold down the SHIFT key while clicking on RESTART from the power option on the bottom right corner of screen.2. Menus should pop up for System Restore options .... go to ADVANCED options.3. Go to SEE MORE RECOVERY OPTIONS until you see this and ONLY THIS: Restore Previous Build .... click on that.4. Make sure your device liek keyboard and mouse is only plugged in if its a desktop computer.5. Welcome back, You should be back to your previous windows 7 or 8.1.6. Run the windows 10 upgrade again second time there should not be any ISSUES.
Windows 10 upgrade didnt went fine.
let it complete the repair and let me know how it goes, we might have to do a clean install if it doesnt work.
you can create a usb bootable windows 10 disk from the following link given below and then you can do a clean window 10 reinstall./
if you can do this on a different computer and create the usb windows 10 bootable disk that would be a good idea.
let me know if you find any problem following the steps.
you may let me know from the email.