When Ubuntu starts after update, the screen is distorted
I'm relatively new to Linux and I just installed Ubuntu on my HP dv7. I also went ahead and downloaded and installed the newest Ubuntu update. Please don't ask the version. I only know Ubuntu detected it and asked if I wanted to install it. Usually, this is a good idea with any operating system.
Now, whenever I get past the Ubuntu splash loading screen, the screen becomes distorted with crazy symbols at the top of the screen (which I know are obscured continuations or afterimages behind the logo or something) along with distorted logos of Ubuntu going completely across an otherwise black screen.
What can I do to fix this? I really want to learn this operating system. Any help would be appreciated.