I did an update on my existing Windows 11 on Thursday morning, and now have the following issues..
No Taskbar, or Start button. Just an empty white strip, with that little up arrow that indicates startup stuff.

Default desktop picture, with only a few icons.

Windows key + I (to get to Settings) not working. Settings flashes on for a few seconds, then banishes.
My hard drive shows the correct free space, but my music, pics & video folders are empty.

Edge reverting to initial Edge setup on reboot.

So, I rolled back a few days, and Uninstalled the latest update, as well as checking file integrity etc.. Nothing..
I even tried the Windows Media tool.. It flashes, then also dissappears.

I tried to reinstall the media update from a USB, it finally worked, it did its thing, went through the installation process, then said 'Undoing changes to your PC', rebooted, and now I'm back to no Taskbar etc..

Any ideas? Maybe use the ISO?

Sorted, Just updated without updated.. Did that later once all worked.