Shutdown and sleep don't work

I'm having issues with shutdown and sleep. My computer doesn't fully go to sleep (screen goes black but power led on PC stays on) and a shutdown results in a reboot.

My system:

  • macOS Sierra
  • Asrock H61M-GS motherboard
  • Intel Core i5-2300 CPU (Sandy Bridge)
  • NVIDIA GeForce GTX 650 Ti
  • UEFI boot

I tried the following things without success:

  • NullCPUPowerManagement.kext
  • EvoReboot.kext
  • FixShutdown flag in clover
  • About any BIOS config setting combination imaginable
  • Patched SSDT using ssdtPrGen.sh
  • Tried multiple model identifiers including Sandy Bridge models

Any help would be appreciated, it's the only thing still not working....

submitted by /u/attaxia
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