I use Windows 7 on a HP laptop. I lost the CD with Windows 7.
One day, my mom plugged in some headphones but the laptop continued to have the audio output on speakers. I struggled with why, googled up one way, and put the headphones as the default output on the Playback tab where it displayed three devices at the time.
The next day, plugged in headphones stopped working. The laptop no longer recognizes whether the headphones are plugged in or not--the Playback tab only shows Digital Audio (HDMI) regardless of whether the headphones are plugged in or not. Went to the testing options and the laptop shows the green bars for sound coming up, but really, we don't hear anything.
I think the speakers renamed itself because I don't recognize the "(HDMI)" being there. Its name is now Digital Audio (HDMI).
There are two audio drivers. There was also a Coprocessor problem, but I installed a Nvidia driver to fix that.
Audio Device on High Definition Audio Bus --problem with updating the driver
High Definition Audio Device --drivers are up to date
Went to a driver website and manually installed Convent HD Audio driver but nothing changes.
Tried disabling one at a time then both and still can't figure out what's the problem. Tried uninstalling and reinstalling both of them, but nothing changed. The laptop's sound is supposedly coming through Digital Audio (HDMI) but no, not really.
It's not the web browser, youtube sounds are not coming out of Firefox or Chrome.
Went to Windows Update. It was one major update and four optional updates, but two or three of them failed. I didn't bother to continue it.
And I tried a last resort: System Restore. For some reason, I can't use System Restore because my computer couldn't find a sif.dat or something.
And then I uninstalled Malwarebytes, which I installed on October 2nd to fix something else but don't remember.
