Win7 Prompt Cannot Detect Dial-Up Modem

  
Check if the NIC driver or network card is disabled, and if you have selected the wrong dialing mode,
If the NIC is disabled, you can open it here:

If the NIC driver is not installed, you can download the NIC. Driver, or install the driver wizard with NIC, install NIC driver
ADSL dialing to choose PPPoE

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