With the microscope plugged into the computer, go to the device manager and find your microscope. Right click on it (should be located under imaging devices), and select remove driver.
Once the driver is removed, go to the control panel and remove/Uninstall the DMS software.
Now that both the driver and software have been removed, unplug the microscope from the computer and go to the link (below) to redownload the software:
Once the download is completed and the software installed, you are going to need to restart/reboot your computer.
When the computer starts back up again, plug in your microscope and open the software. This should provide you with a live image from the camera onto your computer.