I used a third party program to install a kext for ethernet on my hackintosh that didn't suppose internet now i need help

I used a third party program to install a kext for ethernet on my hackintosh that didn't suppose internet now when i try to connect to the internet. On the network page, the page changes every 5 seconds from the ethernet cable is unplugged or, the ethernet cable is plugged in but computer doesnt have IP help plzz