Then the driver I listed only works for 8.1. The system should be updated to 8.1 as Microsoft does not support it anymore with security updates. Either update through the store or reinstall the OS using the media creation tool. If the computer was pre-installed with 8 the key is in firmware. If not, pull the key with produkey.
You can try updating the driver in Device Manager using an Ethernet connection
Edit: Try this driver for Windows 8 if the customer still wants 8. I saw a Windows 8 and 8.1 folder in the extracted file. Provide a junk email address after click the hard drive icon.
Edited by JohnC_21, 20 November 2017 - 02:12 PM.