WN3000RP - Cannot seem to connect my Netgear extender to my PC - PC has ethernet

What are you trying to do? 

you need to give us details and not just very brief sentence. We're not there to see what you're doing or how you're doing it. 

From what you've written, it sounds like your pc had internet connection and you're trying to connect your extender to it to share the connection? Or what are you doing? 

Sorry, we can't help if you can't give us a full description of whats going on, what devices you're using, and what you've tried to do.