I have updated the OS (install from scratch) on a Samsung Ultrabook series 5 (NP530U4B-A01US) from Windows 7 64-bit Ultimate to Windows 8.1 64-bit Enterprise. I have also replaced the single band WiFi N300 adapter with a dual band AC1750 network adapter. Everything works fine, with one exception. The laptop cannot turn off the power for the WiFi card. Because of this, the sleep, restart and shutdown don't work anymore. When using any of these commands, Windows turns off the display and writes to the hard disc what it needs, but the WiFi and power LEDs are left on. To use the laptop again, I have to hold the power button for six-seven seconds to turn off then on the computer. The WiFi card can not be disabled with the Fn+F12 function either. It seems the command to power off the WiFi adapter is somehow hard coded in the BIOS and the new adapter does not understand it.
Is there anything I can do to restore the three power off functions, other than installing back the old N300 adapter?
Is there anything I can do to restore the three power off functions, other than installing back the old N300 adapter?