Ask a Mac Question, Get an Answer ASAP!
Hello. Welcome to JustAnswer.com, an independent paid Question and Answer support site.
I am Abhi with over 5 years of experience and will try to do my best to help you today. I am sorry to hear that you are having trouble. I know that can be frustrating. Hopefully, we can get this resolved quickly. Please allow me a few minutes to review your question to ensure that I don't miss anything.
May I know the brand and exact model of your device?
The screen on your Mac cannot seen. Please do following steps.
Hold down the Shift+Control+Option+Power buttons for a few seconds, all at once. Release them all at the same time and power the Mac back on to see if the black display is fixed.
If you can’t see your Mac desktop on an external display
If your wireless keyboard, mouse, or trackpad isn’t connected (paired) with your Mac, Bluetooth Setup Assistant opens so you can connect them.
Please follow the belwo steps to resolve your issue and read the instructions carefully.
These steps should help you solve your problem with a blue screen on a Mac: Start by disconnecting anything that's plugged into your Mac - the blue screen could be caused by an issue with one of your peripherals. ... Shut down your Mac and wait 30 seconds. Try and boot up the Mac again.
Try starting up while holding the Option key down. That should prompt the Startup Manager window where you can select the startup disk.
Hope the suggestion provided is helpful. Please reply if you need further assistance.
Is your problem is resolved?
ok, please update a window by cd/pen drive once to check.
Source to install a window.
ok, please go your near by apple store to check this, if display is working or not?
ok, you can call the service engineer.
By contact apple support.
I hope I provided you with useful information.
Your feedback is also more important to me.
If you have any questions or would like any additional information, please don't hesitate to ask.
And thank you for using Justanswer.com.
Please click on the belwo link to contact service mam.
Service repair link from another source.