How to fix: Mac Stuck at Blue or Gray Screen?

Video showing How to fix: Mac Stuck at Blue or Gray Screen.

[heavnlyfrequencies]

how can i do any of this, if my screen is gray 😐

[killfeedzgaming]

How long before the screen pops up mines only loaded partially then gone got stuck on blue buffer screen

[aryorezYT]

Hi my screen was gray and it would not turn of I did what u did but when it turns on its still the gray screen

[kathrincsome]

Please help because my dads macintosh that I was using had it's wallpaper changed to blue and there was a virus (mac fixer I think) but the virus wasn't used by me or anyone and need technical support to remove the virus safely.

Edit: The macintosh still works but just a blue wallpaper instead of mountains with bluish - purplish sky.

Edit 2: Please reply if you know how to fix the wallpaper from being blue

Edit 3: it's a visual wallpaper glitch I think

[moments]

What do you do if your mac all of a sudden isn't recognizing keyboard and recognizes mouse but can't click on anything with it

[maranathajesus]

thank you so so so so so much! God bless you the