Windows 10: Unable to log onto Windows 10, display flashing

Turned on pc. Display flashing blue-black continuously. Get the mouse in a certain location, flashing stops and login screen appears. Cursor appears in PASSWORD field. I enter password, hit ENTER, and flashing starts again. No matter where I click on display, flashing will start again. I was finally able to get to the Windows repair tool after a hard boot. It ran for well over an hour. Upon restart, flashing started again.

:)

 

After installing windows 10, desktop has no icons and flashes

Any suggestions?

 

Windows 10 Tweaks

As you may already know, Windows 10 (as well as Windows 8) allow you to log in with a valid Microsoft account, instead of creating a local account that only works on your machine. However, you may prefer to keep a local account for privacy reasons. If you do, though, some Windows 10 features—like Cortana—may not work. Despite the default behavior, the Windows 10 Store is not one of them. You can still log in to your Microsoft account for just the Store without switching to a full Microsoft account. The process, however, is not terribly obvious. To do so, follow these steps:

• Launch the Store from your Start menu.
• Click the user icon next to the search box.
• Click “Sign-in” from the menu that appears.
• Choose “Microsoft account” and log in like normal.
• When the “Make it yours” box appears do not enter your password. Instead, click “Sign in to just this app instead.”

from Lifehacker

 

Windows 10 Flashing Green Screen Unable to Log In

Hi, I upgraded to Windows 10 over a month ago.Yesterday my Acer PC restarted and it displayed the black Windows screen. It then went on to a flashing green screen with a circular loading symbol which started flashing on and off very quickly. I can't log
in or press ctrl alt del. I cant use the PC at all!

I've read other posts that suggest restoring to Windows 8.1 but I'm over the 1 month restore point and I'm unsure how to access any menus etc without being able to log in or access the start menu.

Any quick help would be really appreciated!