Hello Tehkaztorer, welcome!
1st question is if you're 100% sure BT is enabled in your BIOS under the advanced menu:
Allows you to enable or disable the internal Bluetooth
• Disabled: The internal Bluetooth device is off and is
not visible to the operating system.
• Enabled: The internal Bluetooth device is enabled.
If you are... has that Dell techie proven to you that BT is working?
The following quote seems to state that windows does recognise your card?
on "control panel/hardware and sounds/printers and disp"
theres the "dell wireless 370 bluetooth mini card"
properties on this icon says everything is functional...
Have you tried downloading Dells latest drivers for that card? Downloads