Today I replaced my old Gigabyte GeForce 2070 graphics card with my new MSI GeForce 5070 Ti, and the result is that Grub loads perfectly, but then when I select Kubuntu, it doesn't load.
At first, it looks like this for a while:

And after a few seconds the screen shows this:

Finally the screen shows this, whose numbers keep growing until I don't know how much, because I have been there for several minutes and they kept coming out without ever loading the desktop.

The drivers I had installed are the ones included in the repositories and are proprietary. I can't look at them anymore, but I seem to remember they were 550.xx.
In short, I'm locked out of the system, and I'd like to know if you can help me recover my desktop somehow.
Thanks in advance, and best regards…
At first, it looks like this for a while:
And after a few seconds the screen shows this:
Finally the screen shows this, whose numbers keep growing until I don't know how much, because I have been there for several minutes and they kept coming out without ever loading the desktop.
The drivers I had installed are the ones included in the repositories and are proprietary. I can't look at them anymore, but I seem to remember they were 550.xx.
In short, I'm locked out of the system, and I'd like to know if you can help me recover my desktop somehow.
Thanks in advance, and best regards…