Does my iMac 2011 have dead GPU? Unusual symptoms
I know about iMacs 2011 tend to have dead GPU but I wish to know 100% before I start deep messing around in it.
So when power on - it has “chime” and black screen - I hear HDD is loading something - and nothing else happening.
When I insert my old MacOS Panther DVD to boot from it while connected to TV via minidiplay to HDMI cable (which 10000% works) then……….. it beeps 3 times - 2 seconds and then 3 beeps and so on (I know 3 beeps and………. 5 seconds is RAM problem) and I swapped with good know RAM and same thing.
I know to see video from MiniDisplay “drivers” must load up (so fully loaded Recovery or Login Screen) but what if HDD + LCD is dead?
I would do HighSierra USB install disk - but I have Windows 10 only and it is too messy to make install disk.
Those 3 beeps while macOS from DVD install is confusing me.
Thank You for help