I use Zorin SO Litex64 and installed Budgie Themes: https://i.imgur.com/PIPh66R.png
It prompted me with some message that it will be activated after reboot, nothing was happening and then I restarted my PC and nothing happens now. The Zorin logo shows up and then a black screen. If I hit F2 when booting, I eventually end up with this: https://i.imgur.com/iyTsBVV.png, and from there nothing happens, unresponsive keyboard, etc.
Any idea on what should I do?