from last time i remove kde desktop i seen this i don't know what is that,i click it and definitely it not linux mint:)))i sure i'm not install it
On my lap it have lightdm and gdm3 i don't know two of them have any relationship with that
I just install kde desktop on linux mint then I try to run it but fail sao I delete kde and then I remove "Lightdm" then my computer shutdown i try to turn it on but fail
Note:i have a snapshot,can i use it to restore