Range Extender losing connection on ethernet cable

I've recently bought a EX6150 wifi range extender and it works just fine when it comes to the extending of the wifi and so. However, I bought this particular model because it also has the possibility to connect a device using an ethernet cable, my pc in this case. Whenever I shutdown my pc, it seems to lose connection over the cable but the wifi still works great. When I wait a while after my pc has started it'll connect again though. Is there anyway to minimise this waiting period?

Thanks in advance