After installing a SSD, I powered up the computer I get a black screen
I have an iMac Late 2013 - 21.5. After installing a SSD drive, I powered up the computer and got a black screen. Only 3 LED lights are on and the 4th remained off.
I also, had the most difficult time disconnecting the two cables. Now the cable connector is on the logic board is bent and the display cable won’t stay.
Any suggestions, frankly I'm out of them?
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