How do I fix my 2010 21.5" iMac screen that glitches out and won't allow me to login?
The screen on my 2010, 21.5" iMac started glitching, and it won't even load the login screen anymore. I just see weird stripes over the Apple logo as it boots up.
It loads for a while, displays 2 types of weird glitchy patterns (see images)
, and then it just makes the start up noise again and restarts the process all over.