Bummer.
I'm almost going to ask you, to eliminate at Windows Settings, to make a new user like "Admin", but that costs a lot of time and most programs you are not able to see (default account). So, skip that.
I do not use Win10/11 yet, but try to find a way to set the Windows settings as default. After that, do DDU (from the video) and let it force the Save Mode and let it restart. I would even do DDU twice.
Next, if that fails again; Force in the driver.
Open Device manager, select the videocard driver. Select properties and manually forcefully load in the GPU driver. The screen should turn off and flicker and asking you to restart.
Also, silly or not, Google "dxwebsetup" and run that. See if that does download and install parts.