iMac freezes during startup. unable to reinstall OS.
Half a year ago I replaced my HD with an SSD (Samsung EVO). All worked great till yesterday, when my iMac froze. Since then I was unable to startup. The apple sign shows up, but about a 1/3 of the way into the progress bar, it gets stuck. Then the screen goes black and the progress bar starts again. After 3 times of this, the prohibitory sign comes up.
I tried reinstalling the OS from a USB drive. The drive showed up, but when I chose it, the above scenario reoccurred. I tried recovery mode and AHT - same problem.
The computer froze while I was working on a large photoshop file, and after several warnings (which I ignored) that the startup disk is full, the screen went off and on a few times before it froze. I restarted it and opened the same file again, and after a few seconds it froze again. Haven't been able to start it since.
What could be wrong?
There aren't any Mac technicians in my area and it will be a pain (and expensive) to get someone to look at it, so I'm trying to figure out if it's even worth attempting to repair.
Ist dies eine gute Frage?