Avoid third-party "driver updater" software and pop-up ads claiming to "scan your PC." Stick to official sources.
: RTL8111B, RTL8111C, RTL8111E, RTL8168, and RTL8110 series. Fast Ethernet (10/100M) : RTL8101E, RTL8102E, and RTL8105E. Step-by-Step Installation Guide realtek lan driver for windows 7 64-bit
The NIC is in a low-power state, or the driver installation cannot detect the hardware because it is disabled in BIOS or Device Manager. Fix: Avoid third-party "driver updater" software and pop-up ads
This performs a silent installation with no UI. realtek lan driver for windows 7 64-bit