Image of desktop overlaps multiple times and the bottom part is not visible!

Once I install the os and reboot, the display is all distorted. These pictures will show you what I mean. And my lap has an Nvidia Graphics card, GeForce7000 and Gforce610. I tied to install it but no luck. If I can install it before reboot, it can help but I cannot find the files for the Zorin os. Please help!

If you are using Zorin OS 15, please run the following in terminal:

sudo add-apt-repository ppa:oibaf/graphics-drivers

sudo apt update && sudo apt full-upgrade

If you are using Zorin OS 16, please run the following instead of the above:

sudo add-apt-repository ppa:ubuntu-x-swat/updates

sudo apt update && sudo apt full-upgrade

Reboot and test.