Black Screen With Vertical Lines
I have attached an image of my 2012 iMac screen. The bottom 2/3 of the screen seems to be black with vertical lines going through th middle. The top 1/3 is still working however when I bring my cursor there there are random glitches lines coming from under the icon. Does anyone know how I can resolve this? Would I need a screen or CPU replacement?
Note: The glass screen has been cracked for almost a year now and hasn’t caused any problems
iMac 21.5″, macOS 10.15