You can also see the error in device manager:
The device cannot start (Code 10) is basically saying that Windows, for one reason or another, cannot communicate properly with one of your programs. This communication problem is usually caused by out-of-date, missing or corrupt device drivers. Error Code 10 usually relates to communication with 1394 devices which are generally connected via a Firewire or USB cable.
What is USB 2.0 10/100 Ethernet Adapter? Providing Fast Ethernet connectivity over USB, the Plugable USB 2.0 to 10/100 Network Adapter has a compact external design and wide compatibility with its ASIX AX88772 chipset. Two LED’s monitor power and link activity. Support for this adapter built in to Nintendo Wii and Wii U(no driver required). Wired Ethernet via this adapter provides faster and more reliable Netflix streaming, game downloads, and network access than the Wii’s built-in wireless networking (up to 2-3x as fast).
Solution for USB 2.0 10/100 Ethernet Adapter No driver found:
Manually download the drivers from below(make sure you download the driver for you PC only):
1.AX88772 drivers (For Most of the people this will work): http://www.asix.com.tw/download.php?sub=driverdetail&PItemID=86
2.For RD9700 USB2.0 to Fast Ethernet Adapter go here: http://www.drivermax.com/driver/search/search_version.php?devicename=RD9700+USB2.0+To+Fast+Ethernet+Adapter&win_ver=6.2&win_arch=64
3.If none of the above worked and if you have product id 1720: http://www.drivermax.com/driver/update/Network-Adapters/USB20-LAN/USB-2.0-10-100-Ethernet-Adapter/1462864
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That’s it, you must have fixed Ethernet Adapter No driver found Error by now but if you still have any query regarding this guide please feel free to ask them in the comments.