Sorry for the late response. Black screen usually happens when your monitor is unable to detect the video signal output. Since you are using a tablet, some software corruption or a third-party software may be causing this issue. To troubleshoot this, we recommend booting your device in Safe Mode. To do so, follow these steps:
- Restart your PC. When you get to the sign-in screen, hold the Shift key down while you select Power> Restart.
- After your PC restarts to the Choose an option screen, select Troubleshoot > Advanced options > Startup Settings > Restart.
- After your PC restarts, you'll see a list of options. Select 4 or F4 to start your PC in Safe Mode. Or if you'll need to use the Internet, select 5 or F5 for Safe Mode with Networking.
If you still encounter this issue upon booting your PC in Safe Mode, try performing a clean boot. To do so, follow the steps indicated on this link.
Let us know how things go.