LBSC USB to VGA Adapter For Monitor，USB to VGA Adapter，USB 3.0 to VGA Male 1080P Monitor Display Video Adapter/Converter Cord,Compatible with Mac OS Windows XP/Vista/10/8/7, - 5FT Troubleshooting tips：  1. How to solve the problem when there is a delay in the video on the screen.  Try connecting a USB mouse and restarting your computer.  2. VGA monitor did not work.  Set VGA as monitor input source. Your monitor's input source may be different. Please select the corresponding VGA port as the input source.  3. Screen resolution is 800x600 only.  Try a different port and make sure it's connected at USB 3.0 speed.  4. Connect your laptop's power adapter.  Some laptops don't have enough power to push the extra pixels on an external display and plug in a power adapter to provide additional power.  5. Reconfigure the video connection and make sure the cable is securely connected.  6. Use automatic monitor adjustment.  7. Reinstall or update your graphics drivers.  8. Check for software updates for your software.