Apple Event: May 7th at 7 am PT
Suddenly apear Blue line on iMac screen.
First i replaced my RAM > power on > beeping.
I just shut down and remove the RAM and restart again... After couple of minuts i saw just this vertical blue line on the left screen side.
This is likely a failing GPU. You can try the following:
Please restart the computer in Safe Mode per the directions in the How to use safe mode on your Mac - Apple Support link.
Note: If you are using a wireless keyboard please either plug it in using the supplied Lightning cable that shipped with it. If you are using a legacy keyboard or a third-party keyboard that does not have re-charging abilities, please use any USB keyboard. Also note that a Safe Mode restart may require you to hold down the shift key for up to 5 minutes before the computer starts in Safe Mode. You will know it is in Safe Mode when you see “Safe Mode” in the upper right of the display.
If this does not work, the next step is to take the computer to your local Apple Authorized Service Provider to be professionally diagnosed.
This is likely a failing GPU. You can try the following:
Please restart the computer in Safe Mode per the directions in the How to use safe mode on your Mac - Apple Support link.
Note: If you are using a wireless keyboard please either plug it in using the supplied Lightning cable that shipped with it. If you are using a legacy keyboard or a third-party keyboard that does not have re-charging abilities, please use any USB keyboard. Also note that a Safe Mode restart may require you to hold down the shift key for up to 5 minutes before the computer starts in Safe Mode. You will know it is in Safe Mode when you see “Safe Mode” in the upper right of the display.
If this does not work, the next step is to take the computer to your local Apple Authorized Service Provider to be professionally diagnosed.
iMac vertical Blue Line on screen
