black screen and white bar
won't complete a boot up....white bar almost reaches end but stops short
iMac 27″ 5K, macOS 10.14
Question marked as
Hi there,
Read this: https://support.apple.com/en-us/HT207019
You may also need to reset:
PRAM: https://support.apple.com/en-us/HT204063
SMC: https://support.apple.com/en-us/HT201295
Cheers,
Jack