In Windows 7 64 bit, in my playback devices, I used to have Stereo for speakers and headphones. I upgraded my drivers to RealTek's latest, restarted my PC, and I lost the headphone playback device.
If I unplug the headphones, the sound automatically transfers to the speakers and vice versa, but it was convenient to use that instead of plugging and unplugging headphones.
Is there any way to get that back?