Error 10 messages are usually Device Manager related. Sounds like you've got some registry problems?
I'd try UNINSTALLING the DRIVER and DELETING the device and re-booting. Windows should find the device again and install drivers. Rather than letting it use what it finds, point to the ones you got. Maybe that will correct it?
If that doesn't work, tell us more. Is this a NIC or embedded device on the motherboard (suspect it is a RealTek on the motherboard)?
Also explain how you decided Google Update was the problem?
Normally, I wouldn't expect a startup program to kill the internet connection other than some virus, but usually those DO want the internet connection so data could be sent from your computer. Have you scanned it with an A/V or Malware program?
If it continues after that, please check the EVENT VIEWER for an error and post the details for that here.