Local area connection doesnt have a valid ip configuration

i was able to connect my pc to internet through cable to my laptop which is connected to a wifi network, but after reinstalling windows to my laptop now i cant connetc to internet from my pc. laptop is still connected
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More about local area connection doesnt valid configuration
  1. I think if I am understanding correctly you are trying to do a network bridge from the wifi on your laptop to a desktop by using a network cable.

    Or is it that your laptop can't connect to wifi? Or is your laptop connected to a router with a cable?
  2. Did you install the system drivers?
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