Wireless not working after I got a new technicolor thomson 799 v2 gateway router

[user1]

> Press and hold the reset button for 10 seconds - should help many
> problems they say.
> 
> http://www.telia.se/privat/support/info/fabriksaterstall-tradlos-router

After two faulty Thomson technicolor TG799TSvn v2 routers I now got a 
such new router from my ISP and this works okay, both using ethernet 
cable and using wifi