Lines When Sharing Screens
I am working on an computer for a friend and it is having some strange issues that I hope are software related. When I connect via Share Screen it shows up initially fine for logging in. After that is shows up with a bunch of lines and cannot be read or seen. This computer was damaged during a lightning strike however I do not understand why the login screen would work fine then once the user loads it would no longer be working correctly. Any help would be greatly appreciated.
I do not know the specs of the computer because I cannot access anything beyond the login screen.
Mac Pro, OS X Mountain Lion