First, let's determine if your computer is correctly detecting the microscope. 

1. Right-click on the Windows logo, select Device Manager.

2. With Device Manager open, expand the “Cameras” category and look for “Digital Microscope" or "Plugable Microscope". If it's listed here, that means it's being correctly detected. 

Now that we know the microscope is detected, let's test it out with the Camera App.

3. Click the Start Menu, type Camera and select the Camera App.

4. With the Camera App open. You may need to cycle through your cameras if this is on a laptop. The cycle camera button should be in one of the corners of the application. In the image below, and on Windows 11, it's located in the top right corner. Note: If all you see is a black screen, ensure you turn up the dial on the microscope to increase the brightness; the LED on the microscope should be bright when adjusted.