I recently built my first PC and my motherboard came with an Asus 2t2r antenna, it does both Bluetooth and wifi, but after about a week after I built my PC the Bluetooth and wifi suddenly stopped working, at first I thought it was because something happened in my bios that I didn't intend, because my wifi/Bluetooth stopped working on both Windows 10 and Linux, so I knew it had to be something with the bios, after setting everything to default and quintuple checking all the settings which could affect it, it knew it had to be my PC's antenna. my laptop could connect to the modem fine, I made sure all the cables were properly plugged in and there isn't any physical damage to it from what I can see, here is a picture of it (not mine)