Hi Darilari,
The Intel(R) 82579V lan is an embedded NIC on the Acer Predator G5910, I would suggest you to get in touch with Acer for validated drivers customized for their system in Windows 8.1.
I manage to check on Acer website and found they have drivers available for Windows 7 OS only. Here is the website you can check:
http://www.acer.com.ph/ac/en/PH/content/drivers. Select the Desktop for the Group, Predator as the series, Predator G5910 as the product.
Hope this helps.
wb
