I had the same issue, and I resolved as you recommended. However mi headphones are not working yet.
I have already tried others and nothing
What else could I do?
Hello. I apologize for the delay in answering -- I have fallen behind a bit.
Try switching to the Windows native audio driver and see if the headphones work. If it does then the Realtek audio driver is buggy. If it does not work with either the Realtek driver or the native driver then probably hardware failure. In that case contact tech support if you are still under warranty. If not then get an inexpensive usb audio jack.
1. Open the Device Manager (find it in the Control Panel, or type devmgmt.msc into the search box).
2. Expand the "Sound, video & game controllers" and right click on "Realtek High Definition Audio".
3. Select to "Update Driver Software".
4. Click on "Browse my computer for driver software".
5. Click "Let me pick from a list of drivers on my computer".
6. Put a check in the box "Show compatible hardware" if not already checked.
7. In the list of devices, click "High Definition Audio" (the native driver).
8. Click "Next".
9. On the Update Driver Warning box, click "Yes" (install the driver).
10. Restart the laptop if prompted. If not prompted, then no need to restart.
[To get back to the Realtek driver, do it again but reverse the names in steps 2 and 7.]
Jim Coates -- 18 years on the Dell Laptop Audio boards -- since 2/6/04