Hi Guys and @PIMAX-Support
My Pimax which I received on last Friday doesn´t get recognised in Pimax mode after I installed 1.2.5.75 and the latest firmware 1.0.0.251 with 1.2.57 and 1.0.0.248 it worked perfectly.
I tried to deinstall my graphic card drivers/update/downgrade, deinstall Pimax software with Revo Uninstaller, downgrade Pimax sofware/firmware in manual and auto mode and updated everything back to 1.2.57 and 1.0.0.248 but still the same.
Windows detect the Pimax in the video mode but only shows a black screen. Unpluging USB and HDMI didn´t help either.
My System is Windows 7 SP1 with an AMD RX 470 (17.4.4 drivers) tried also the newest 17.5.2 drivers.