And notice how all this happened after installing Wine?
I know your not aware of this, but I've had really bad experiences with Wine. And the latest bad experienced involved a .MSI file that launched into Wine and ruined my system.
So, I guess what we need to do is repair your Zorin GUI, and then I would recommend the removal of Wine afterwords. Does our terminal meister @Aravisian have a command to repair the Zorin GUI via terminal that he can launch in safe/recovery mode?
Flash back of bad old days...
i just need help, like my zorin appearance app is not showing any theme plus my login graphics are driving me nuts as it is showing a big ubuntu logo
I am afraid something went very wrong.
Did that happen just after installing Wine without attempting to install any .msi or .exe files?
What method did you use to install Wine?
Preemptively, you may try
sudo apt install --reinstall zorin-os-desktop gdm
Go into Synaptic ( if you don't have it installed, install it through the store) , search Zorin and see if you have the Zorin appearance files installed.
yesssssss
You mean you just installed Wine without doing anything else?
i was trying to use metatrader so i configured it and only changed windows 7 to 10.
meta trader exe wasnt installing to i left it, but it turns out something wrecked my os
Did you follow a guide for installing Wine? Something we can reference?
Did you add a Repository?
dont remember adding a repo as i installed window support from software, and then directly installed an exe that installed wine
yes absolutly
Sadly, this does not leave much room for troubleshooting.
Above, I suggested reinstalling the Zorin OS desktop environment. I think this is worth trying.
@DeanG suggested using Synaptic to do the same.
As You and @FrenchPress both said: Something went very wrong.
Normally, we would try to figure out which step resulted in the failure. Better to know the cause than to just throw packages at it.
But if the gnome-software manager was involved... There's not a clear path to trace.
I encourage you to use what you have to make back ups of your personal files, just in case.
And if I were the OP, I would never trust Wine again, nor .MSI files or .EXE files. I have had nothing but bad luck with Wine, and most recently, it was a dreadful experience. And what the OP has gone through, feels a lot like what I went through, just a little bit different in the end result, however, very similar.
I don't know what it is with Wine, but it never is something I have been able to trust. Yeah, I know, I get it, its supposed to be a compatibility layer to allow you to run Windows software. And how did that go for us? The answer, terrible!
There is no warning that comes with Wine that says, warning, running Windows software could brick your OS. I really think there should be a warning.
Honestly... I have been on the forums for a reasonable amount of time.
In the last week, I have heard the First Two cases of this happening with Wine.
I have installed and removed Wine many times. I have used Wine, though it has been a long time since I have. Never seen anything like this prior to this week.
Now that is alarming 
I think somebody needs to take a close look at the code in modern day Wine.
Wine is supposed to be sandboxed like a Flatpack. But it clearly has access to all your system folders and home folders, and allowing stuff to get screwed up. I wanna know what is going on with modern Wine.
Wine should never allow Windows software to brick an OS. But I fear that Wine is no longer what it once was way back in the day. This is going to keep happening, its not going to fix itself. Were going to get more people coming in here for the same thing.
I am starting to think that maybe the Zorins should make a PSA post on the forum telling people to not use and install Wine. IDK. If it were me, I would say, DO NOT use WINE, and DO NOT install Wine.
i used zorin for compatibility, if not for running little windows apps and completely screwing my os, i would shift to windows instead
@FrenchPress uses a Virtual Environment for Windows.
That may be an option for you.
In the meantime, it sounds like the desktop itself was removed somehow.
I am not sure if this was a software Uninstall action or not. But that action may be a clue about what happened to the desktop.
No issues here if you know what you can install and what not. You tried to update a bios/firmware using wine. People already gaved advise to install windows if you need to do a firmware or a bios update to play save. Don't blame wine for a user error please.
So because you made a mistake you tell people everywhere to avoid wine ? Wine is handy for windows apps and games, to make things easier for users who came from windows and make their way to linux. Is that not what zorin wants ? Make things easy for windows users to make their big step to linux ?
You demotivate (new) people by posting this (everywhere).
