A:AnswerI know this is late but I had the same problem, the sound is coming from the pump on the cpu because there is too much air in the system. The Idota who assembled it didn’t properly install the aio which lead to mine dying after 14 months. I would recommend me of the 240mm aio coolers from nzxt. Comes with a 3 year warranty and mine sheen going strong for about 2 years now. Hope this helped.
A:AnswerI'm sure I've had the same problem. It's because it supports ethernet but it also supports wifi. To connect to ethernet, you need an ethernet cable. But if you don't want that, you can buy a wifi card. You connect this to your pc. There should be tutorials on how to install a wifi card to your pc online. I use wifi card and I bought it off amazon and it works good! Hope that helps :D