hi，please check your connection issue as below:
- HDMI cable directly inserted into HDMI port of computer independent graphics card (GPU)
- USB cable is inserted directly into the USB port of the computer
after you insert USB cable, you will find a new HID compliant （e.g. 0483_0021=Pimax 4K）shown in device manager on PC. If can not find this HID device, please check your USB cable connection.
If new USB device is not detected with no LED light at all, please change to another USB port or PC to try.
If all tries is still no effect at all, please send to firstname.lastname@example.org for this situation, it maybe hardware issue and need to send back for checking and repairing.
Helmet status： What color is the LED on the helmet after the connection?
Blue: normal connection state
Green:Please check the HDMI connection
Red: Please check the USB and HDMI connections. Replace the USB port to re plug.
make sure VC is fully installed, or you could download th above to fix the installation.
make sure DirectX is installed correctly, or you could download th above to fix the installation.
copy all the files to your piplay folder \Program Files\Pimax\runtime,advice you to do this to fix your broken Connection issue.
When installing Piplay/Pitool1.4, anti-virus software / all kinds of security software must be turned off.：
If the installation is not closed in time, please completely uninstall piplay/Pitool1.4 and reinstall it.
Piplay download address：http://pisetup.pimaxvr.com/PiPlay_Setup_126.96.36.199.exe
Display card driver:
please download latest driver:http://www.nvidia.com/Download/index.aspx