Dell did not test your PC for Windows 10. Hence no drivers. http://www.dell.com/support/article/us/en/19/SLN297954/EN#Vostro-DT

I've realized that and think it's unserious. Installing OS should not required research, pc runs with win10 pretty well, much better than 7. Is there nothing I can try to use instead of dedicated drivers?

Is there nothing I can try to use instead of dedicated drivers?

Press [Fn] and [F2] it should disable WiFi and BT. Press it again and they should be re-enabled. Once it shows in the Device Manager try to install the following:

http://downloads.dell.com/FOLDER03167044M/1/Network_Driver_T3GMW_WN32_12.0.1.654_A00.EXE

Unfortunately in 3300 Fn+F2 is for battery, not wifi/bt. The issue is BT is never shown in Device Mng.

Hey @drexiu @Philip_Yip @ieee488 ,

After a long battle with the Bluetooth driver, I finally managed to install it. Here are the steps I followed:

STEP 1: Enter BIOS and activate the Bluetooth module (it was disabled in my case). To enter BIOS, you need to press F2 after restarting the laptop.

STEP 2: Go on Dell Support page, enter your Service Tag and download the Bluetooth Driver option for Windows 7. For me it was the following one:

https://dl.dell.com/network/DELL_WIRELESS-365-BLUETOOTH-_A00_R253452.exe

STEP 3: After you successful downloaded it, run it. Once done, navigate to C:\Dell\drivers\R253452\Win64 and run BtwMM.exe and Inst.exe

STEP 4: Restart your PC and enjoy.

Hi I am also facing same problem.

It seems all fellow members gave you the solution.
Anyway, please uninstall the driver. Now download and install it again from here.
https://www.dell.com/support/home/us/en/19/Products/?app=drivers

Check my reply, it has all the steps needed to solve the issue.

Good luck!