A:AnswerIt's a good deal especially with the gaming video card. You could not build this any cheaper even if you waited for sales on the components. Yes it does have Ethernet port.
A:AnswerAs far as I know this board can handle this upgrade. You may want to try replacing one component at a time so you can test. I don't believe Asus supports you if you swap parts but you could give them a call to help troubleshoot.
A:AnswerMy suggestion is to buy the next level up of this computer that comes with the items you want to upgrade. You may save some money by getting through the store rather than upgrading different pieces.
A:AnswerYes, just had this happen. Wouldn't boot up again. Totally OOO. Luckily it was in the first 15 days and BB just gave me a new one. We'll see how this one does