I am using a J5create USB to HDMI Multi-Monitor Adapter for a second monitor on my MacBook Air 2011 running Siera 10.12.6. It was working perfectly until I used MacKeeper to remove files that start up at LogIn. Can anyone help solve this issue?

It really is the most expeditious option. There are less drastic approaches, but I wasted enough of my own time pursuing them. Unless you have an overabundance of time and energy, in the end an erase and reinstall is the way to go. MacKeeper and its ilk are destructive. There's no other way to put it.

mrbMacUser Said:

"I am using a J5create USB to HDMI Multi-Monitor Adapter for a second monitor on my MacBook Air 2011 running Siera 10.12.6. It was working perfectly until I used MacKeeper to remove files that start up at LogIn. Can anyone help solve this issue?: I have downloaded the drivers again for the J5create USB to HDMI Multi-Monitor adapter but that did not fix the issue."

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For reference...

Troubleshooting External Displays:

Some links that may help:

• Change Displays Settings on Mac - Apple Support

• Use Multiple Displays with your Mac - Apple Support

• Extend or Mirror your Mac Desktop Across Multiple Displays - Apple Support

B. Mirror the Home Screen:

Hold Down: [command + F1]

That will mirror the Home Screen, and allow you to use it as if it were you laptop's screen.

I don't know what a "J5create USB" is, but if you used MacKeeper to do anything the solution is to completely erase the Mac and restore a Time Machine backup prior to using it. If you have no such backup erase the Mac and configure it from the ground up.