I've sorted this out after getting hold of another z83-4 Max PC
Delete the Wifi device from Device Manager
Extract just the files from the Broadcom.zip below into C:\Windows\System32\Drivers
Then scan for hardware changes in Device Manager
For the ACPI\ESSX8316\1 drivers
Extract the folder from ES8316AudCodec.zip then right click the inf file add click install, delete the device from Device manager and scan for hardware changes.