Today, two drivers have been updated from Realtek, which are responsible for network settings. In total, three files have been updated: a driver for Win10 and diagnostic programs for Win Xp and Win 7/8/10. You can view and download the updates from the link below.
Realtek PCIe GBE Family Controller
Realtek PCIe FE Family Controller
lenovo Z 50.70 laptop W 8.1
comment mettre a jour REALTEK PCLe GBE Family Controleur 8 20 815 2013
(cette version du pilote fonctionne bien )..Merci et cordialement