Axios Did you trying running dell diagnostics ...
@WetGeek I hadn't thought about Dell pre-boot diagnostics because the problem seems to be with the motherboard socket rather than the Bluetooth radio from your description, and the solution in that case is to replace the motherboard, which probably doesn't make sense in your case. But it is worth a try.
Repeat-click F12 on boot. When the Boot Menu opens, scroll down to Diagnostics. The program will run, and if it finds a hardware problem it will give you an error code. You can look up the error code on Dell's support pages and get an idea about what failed.
I'm not sure how deep the ePSA diagnostics go in terms of isolating motherboard issues, so I don't know if you will find anything.
One other thought occurred to me. You replaced the OEM radio with a newer radio, as a I recall, and when the newer radio failed, you replaced it with another radio this weekend. Have you though about going back to the OEM radio and seeing what happens? If all three fail, you know it isn't the radio.