Hackintosh AMD Shutdown Problem with Fenvi FV-T919

After finally building my first Hackintosh, I decided that the AMD Ryzen™ 3900X processor would be perfect, although Apple never made a Machintosh machine with an AMD processor. I used the Gigabyte X570 Aorus Elite motherboard because it has everything I need for my build. But I decided to upgrade my working machine with a Bluetooth/Wifi PCI-E card to be able to use the SideCar function in macOS. Being able to connect Bluetooth equipment is also lovely.

After Googling around, I found a card that filled all my needs. It’s the Fenvi FV-T919, a Bluetooth 4.0, and 802.11 a/b/g/n/AC compatible Wifi-card that uses ICs that are supported in macOS directly, so no patching needed.

But after installing the card, there was a problem when trying to shut down the machine from the macOS side; the computer would shut down and immediately start up again. Fortunately, I’ve found a fix for the problem.

Machine Refuses to Shut Down

After doing the standard Googling, I found others with the same problem. Their solution? Buy another less capable card, the Fenvi FV-HB1200, to solve it. So I did. But after trying the new card, the problem remained. Gaaaahh!

So I realized that there’s probably a setting in the BIOS that needs to be adjusted. And I was correct.

Here’s what you need to change in the BIOS if you have an Aorus motherboard and have this issue.

• Reboot the machine and go into the BIOS settings by pressing the Delete key on your keyboard.
• Switch over to Advanced settings. Under “Settings,” choose Platform Power.
• Set the ErP setting to Enabled.

The ErP setting turns off power to the PCI-E bus and LEDs. I guess that there’s a firmware problem on the Fenvi cards that makes the machine reboot when trying to shutdown.

I hope that helps, so you don’t go down the route of buying two cards unnecessary.