XPS 13 9343, bluetooth suddenly disappeared

Hi, I've used this laptop for a year or so (was handed down) and the bluetooth has been working perfectly fine until a few weeks ago. The bluetooth toggle button completely disappeared, and when I run the troubleshooter for bluetooth it says: 

Device does not have Bluetooth

Bluetooth is not available on this device. Please try using an external adapter to add Bluetooth capability to this computer.

I tried fixing it myself (regretfully) and I uninstalled the emulators or something And now it just seems impossible to fix... I tried cold restarting my device; restarting it and pressing F2 while on the Dell logo, the microsoft support person told me to install these three things: 

Dell Update Package: Intel PROSet/Wireless Bluetooth LEGUI Application, 18.1.1527.1551, A00 

DW1820A_Bluetooth_Win10_12.0.1.1105_USB_x86-x64_Installer_setup_ZPE.exe 

Dell Update Package: Intel AX200/AX201/9260/9560/9462/8265/8260/7265/3165 Bluetooth UWD Driver, 21.70.0.3, A17

But again it still doesn't work... if anyone knows how to fix this please help me, thanks.