For now I've reinstalled Zorin and didn't change anything, Is there anyway to fix this problem?
The laptop has the Nvidia Geforce GT 720M and the Intel HD Graphics 4400, Could the fact it has hybrid graphics be the cause of this problem? Secure boot is disabled and i'm booting from Legacy/BIOS
Also Zorin shows that the Nvidia Driver 340 can be installed, However (according to Nvidia) the card's latest available driver is 390
Update : I found a guide here on how to install the drivers manually, I downloaded the drivers from Nvidia's site and followed the guide, now the drivers has been installed properly and the Nvidia X Server app is working, The only problem now is there's some screen tearing, I still haven't found a fix for it yet