Have you tried uninstalling all Network adapter drivers through Device Manager? That does include the Microsoft virtual miniport adapter drivers.
For each device listed under Network adapters in Device Manager (you won't be able to download the Microsoft drivers, and probably won't be able delete them, but that isn't a big deal):
- First, download the latest driver. Then do the next steps.
- Click Start Menu
- Right Click My Computer/Computer
- Click Manage
- Click Device Manager from the list on the left
- Find the device you are trying to uninstall by expanding the appropriate set of devices
- Right click the device
- Click Uninstall (do not click OK in the dialog box that pops up after hitting Uninstall)
- Put a tick in Delete driver software for this device (if this option is available, otherwise just hit OK) and hit OK
- Restart your computer only if Windows asks you to.
- Install the latest driver for the device.
Alternatively:
- Login as an adminstrative user.
- First, download the latest driver. Then do the next steps.
- Click Start Menu
- Click Control Panel
- Click Hardware and Sound
- Click Device Manager (the last link under Devices and Printers)
- Find the device you are trying to uninstall by expanding the appropriate set of devices
- Right click the device
- Click Uninstall (do not click OK in the dialog box that pops up after hitting Uninstall)
- Put a tick in Delete driver software for this device (if this option is available, otherwise just hit OK) and hit OK
- Restart your computer only if Windows asks you to.
- Install the latest driver for the device.