If your Mac appears to be stuck on a blank screen, follow these steps. This topic has been locked by an administrator and is no longer open for commenting. I would hit the control-alt-delete to try to bring up the taskbar but at that point, when I move the mouse, you would see little boxes that would refresh a bit of the screen. This always worked until I replaced my iMac with a new one this week, iMac 21.5", I'm trying to access an Intel NUC NUC5CPYH unit. Are there any other tips? Make sure both computers are connected to the same network. The second customer has a crappy connection and the computer that I can't connect to is an HP. 2022 Parallels International GmbH. To properly set up ScreenConnecton your Mac device, do the following: ask a new question. Press the arrow icon to join the session. Not sure which brand. A technician should now have remote control over the macOS device. I understand you're running into an issue screen sharing between your iMac and MacBook Pro. If Disk Utility found errors and repaired them, restart your Mac. I don't know what was causing it but it fixed itself and I can remote into the computer with no graphic problems now. (Each task can be done at any time. First, you'll need to power off your Mac by clicking on the Apple menu at the top-left corner of your screen and clicking on Shut Down. Mar 8th, 2017 at 5:00 AM. Newer versions of MacOS (iterations Mojave and newer) have issues with providing access to keyboard and mouse control in remote Connectwise access. When you have finished, click the lock again to prevent further changes. If Disk Utility found no errors,reinstall macOS. In the installer window, enter information for your access agent. Level 1. To fix this, you will need to physically access the machine. See Turn Mac screen sharing on or off. I already tried installing the latest version of the driver from Intel's site and also an older version but it still had the same problem.