Windows 10: Flashing Screen before login / DISM attempts failed

Hi

So I am really stuck, not realising that I didn't have my restore points turned on..which is frustrating as I had it from windows 7 when I updated..but anywho one of my hard drives crashed (not OS) but froze the computer and on restart I got this crazy flashing bellow is a video I made of what is happening. I left it overnight to see if anything but still was flashing

I have read through a lot of stuff about graphics cards drivers etc..so I've removed drivers, even tested with other Nivida Cards.

In safe mode and in command prompt I tried then SFC which failed then DISM but being not the latest version of Windows build I tried getting a matching WIM (older build of Win ISO) and still getting the not found error..so not sure where to go from here..surely there is gotta be a way to get passed it..its already in windows as I tried the windows + P and that came up and some accessibility stuff but thats it..alt+ctl+del not working..

Hope someone has figured this one out..thanks in advance

Windows 10 Flashing, Unable to fix - YouTube

:)

 

Update 1709 issues. Failed to install correctly. Now keyboard and sound drivers are corrupted

Neither worked. Dism gave an error:50 and SfC found nothing. System then began locking up at login screen. Attempted to use a system image to restore and it failed. Won't boot into safe mode as it got stuck in an automatic repair loop. Just tried
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Flickering login screen only

I originally installed Windows 10 (from 7) in November. Recently, suddenly every time my login screen is up, the screen flashes between the login screen and the lock screen background. It usually takes me at least five attempts to login because the login
screen is only up for 1-2 seconds. If I don't type in my password quickly enough and hit Return, I lose my progress because the screen flashes to the lock screen and then back to the login screen where I have to start over. This flickering does not occur at
any other time, only on the login screen.

I made no changes, hardware or software, before this problem started happening. I did try the prior version of Nvidia drivers but the problem persisted.

I ran sfc /scannow but no problems were found.