windows boots into black screen with command prompt

Noticed today that there was an update ready to install so I went ahead with it. During the update process I accidentally hit f8 at my bios screen and booted into windows boot manager. Realizing my mistake I went ahead and exited it and hoped that the update would be unaffected. Windows said the update was 100% complete and loaded into my sign on screen. However, when I signed in I was met with a black screen and an instance of cmd running. I can load the rest of the windows UI by running explorer.exe in cmd and the system works absolutely fine from what I can tell. But, no matter what when I sign into my main admin account it always boots up with a black screen with cmd running.

Interestingly enough though, I made a new account and the issue is not present there. I would just do a system restore however it fails to complete successfully, it gives me a failed to extract file error. Even when doing a system restore from the startup settings menu it still will not complete successfully, I get an unspecified error has occurred error code 80070003. I've also tried booting into safe mode and the same issue with the black screen with cmd and system restore occur.I've checked msconfig and the safe boot and No GUI options are both unchecked... Any assistance would be greatly appreciated.

Other things I've tried:
SFC check
checking regedit to make sure explorer.exe is set to run on start up
windows update repair tool - which does tell me that there are errors with the windows update components and can't repair them.
running the system image health command in powershell

Hi, you might try this: scan down or search for 'Best Answer' towards the end:
cmd prompt appears instead of booting windows after using Hitmanpro to remove a trojan - [Solved] - Windows 7

Approach registry edits with caution: back up appropriately.

System Restore: notoriously unreliable as regards restoring.

We strongly and continually urge users to use disk imaging routinely before and after major changes and periodically - e.g. Macrium Reflect (free) + external storage. Not the same as System Restore, but gives a way to restore Windows and any other partitions imaged should things go badly wrong - even if you need a new disk.

When you have resolved the CMD prompt dialogue box issue, then try
Reset Windows Update in Windows 10 | Windows 10 Tutorials

Weird thing.. no no idea, sorry. Glad it helped- not one I've seen before.

Please post back with outcome of work on Windows Update.

Did you remember to do this?

Right click or press and hold on the .bat file, and click/tap on Run as administrator.

Otherwise sounds like you have permissions problems or services corruption of some sort.

Try Tweaking.com's free cautious repair tool; limit your choice of repairs to those necessary.
E.g. 03 (Service Permissions), 26 (important services), 17 (Windows Updates)

Try running the Windows Update Troubleshooter again and see what that says now.

If it still fails, try Tweaking.com's tool, then the Troubleshooter again.

Boot problems: Black screen + CMD no explorer.exe Solved - Windows 10 Forums

@TairikuOkami - thanks - that problem was solved (post #3) - unless you think there's something more.

Now looking at the WU problem mentioned in #1.