Question: I have installed Ubuntu 10.10 32-bit on my PC with my USB Flash disk. I then installed an NVIDIA driver through **Additional Drivers**. Unfortunately, I forgot the driver's version, but I think it's nvidia-185. 

And I rebooted my PC an ugly splash screen appeared, and I can't pass the login screen or log in.

How can I resolve this?

Answer: 
As mentioned in [this article](http://www.socialblogr.com/2010/10/how-to-install-nvidia-graphic-card-driver-on-ubuntu-10-10.html), I needed to disable nouveau before installing the driver.
You need to reconfigure xorg. See [this thread on Ubuntu Forums](http://ubuntuforums.org/showthread.php?t=690760)