Self-diagnosis of FL2000 monitor not working

1. Check if your system display adapter driver is installed properly.
2. If you have DisplayLink devices installed in your system, please remove the driver from Control Panel\ Programs and Features\ since these kind of devices may influence the performance.
3. If you have the USB to VGA adapter connected to a USB 3.0 Hub, connect it directly to a USB 3.0 port on your computer instead.
4. When the FL2000 dongle is plugged in, invoke device manager. Click "Devices By Connections" under "View" menu. Under the device tree view, expand "ACPI x64-based PC", then expand "Microsoft ACPI-Compliant System". Find "PCI Express Root Complex". Under the "PCI Express Root Complex", find  "Intel USB3.0 eXtensible Host Controller -1.0(Microsoft)". You should be able to find "FrescoLogic FL2000 USB Display Adapter".  like this:

5. In the device manager view, find your Graphics driver node. You need to install full display driver such as Intel HD Graphics family, or Nvidia GeForce, or AMD Radeon drivers.  If your graphics driver is not install, Windows would use "Basic Display" driver to operate your graphics hardware. Fresco Logic driver won't work with Microsoft BasicDisplay Driver. Make sure you don't see any Basic Display Driver in your device management view.
6. Once the graphics driver is properly installed, you should see "extra" monitor enumerated under the graphics display driver node. In the above example, a "SyncMaster 2343" monitor is enumerated under "Intel HD Graphics 4600".  When unplugging FL2000 dongle, the "SyncMaster 2343" monitor would go away, and it would get re-enumerated when FL2000 is replugged back.
Also, use "C:\Program Files\Fresco Logic\Fresco Logic USB Display Driver\FL2000\x86\fresco_monitor_tool.exe" to verify if your monitor is detected. 
If the monitor is properly connected to FL2000, and the monitor is not recognized by the FL2000 dongle, you would see the following dialog box.
7. If extra monitor is detected under device manager view, then you should be able to use the monitor. In the "Display UI", make sure you set the extra monitor as "Extended" mode, like the following screenshot.