A:AnswerYou will need to reinstall the ethernet driver for your system. Check which brand you have and go to their website to redownload the driver if you have WIFI connectivity. If you are using ethernet connection only, then you will need to download the driver using a computer that has internet capabilities in order to download the driver onto a USB and reinstall that way.
A:AnswerUnder [Wireless Connectivity] section, you can see this prebuilt comes with both wireless Wi-Fi connection and Bluetooth. Motherboards always come with a ethernet port. In this case you get both, you choose which one to use.
A:AnswerFirst you should double check how many devices are connected to your wireless router and also should reset the router. If that does not fix the problem would double check to see if the Wifi and Bluetooth drivers are fully up to date. Finally the proximity of your system from your router. If it is too far away you may want to think about a Wifi signal booster.
A:AnswerThis is a prebuilt system so you will not be able to swap out the AIO Liquid Cooler before purchase. You can swap it out yourself if you wish to upgrade it after purchase.
A:AnswerThis system comes with a 700 Watt PSU. If you wish to upgrade to a 3080 or 3090 GPU the recommended PSU is 750+ Watt. That is the only thing you may need to upgrade.