My nvidia shield 2015 pro going under APX mode

Hello to looking for a tutorial step by step or a guide to recognized if i could recover my nvidia shield tv pro 2015 from apx mode/status???
i have black screen when i put the comand adb devices on my pc win10 after i ve installed sdk and the nvidia drivers appears this error :
C:\Users\Andrea\Desktop\platform-tools>adb devices

  • daemon not running; starting now at tcp:5037
  • daemon started successfully
    List of devices attached
    no devices
    under device in pannel control appear installed the driver someone could help me ???
    thanks a lot Andrea

you are in the wrong forum. Shield forum can be found here:

ok sorry man now i repost thanks
for your rapid answer