Hi! I see you're encountering a black screen when trying to use the GETTR app on your Windows 10 device. Let's work through some steps to get that sorted out.

First, just to clarify: Are you using the GETTR app installed on your Windows device, or are you accessing GETTR through a web browser? Also, is this black screen happening right after you open the app or during certain actions within it?

While I wait for your details, here are some general steps you can try:

1. Restart the App: Close the GETTR app completely. You can do this by using Task Manager (Ctrl + Shift + Esc), find GETTR in the list, and end its process. Then, reopen it.

2. Check for Updates: If you have GETTR installed, ensure the app is updated to the latest version. Updates often fix bugs causing display issues.

3. Clear App Cache (if possible): Some apps allow clearing cache from settings. If GETTR provides this, try clearing it to remove corrupted data.

4. Restart Your Computer: Sometimes a simple reboot resolves temporary glitches.

5. Check Graphics Drivers: Since a black screen could be related to display issues, make sure your graphics drivers are up-to-date. You can update them via Device Manager or the manufacturer's website.

6. Try Using a Different Browser: If you’re using GETTR in a browser, try accessing it via another browser like Chrome, Edge, or Firefox.

7. Disable Browser Extensions: Some extensions can interfere with web apps. Try disabling them temporarily to see if that helps.

If after these steps the issue persists, please let me know any error messages you see or when exactly the black screen appears. That way I'll be able to guide you further.

Are you satisfied with this initial approach? I’m here to help get you back into GETTR smoothly.