I'm a little confused about your connection.
PC and NAS are connected to the switch, right? Which devices are connected by powerline adapters?
Powerline adapters are paired?

Hi,

Thanks for replying.. I hope this clarifies...

Router Modem to switch

switch connects PC, NAS and 3 lines into a triple powerline unit ---- at the other end of the powerline is a smart TV, Bluray and Playstation (all turned off most of the time)

The TV can happily access the internet so am happy that the powerlines are paired.


I just have no clue why the powerline adapters totally wreck my PC's access to the network! PC is happy again once I remove the powerline leads from the switch.

Thanks for any help!

The PC is the only device with the problem, right?
Can you try static IP on it? Maybe it helps. Or connect the PC directly to the modem instead of the switch and test.

So you connected 3 network cables from the switch to the powerline adaptor? Try using just one cable if you have. Using multiple cables between the same switch and adaptor will just cause a loop problem and probably jam the network up.