I am receiving error message: Windows did not detect a properly installed network adapter. If you have a network adapter you will need to re-install the driver. This problem started after my wifi modem stopped working and I got a new one.
I don't know why changing out the modem would affect the PC, but the only suggestion I can offer would be to install the nVidia chipset driver, which includes the Realtek ethernet driver and see if that works for you.
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