Can anyone help?
I also have an HP Pavilion DV70 running on Windows Home Premium (less than 2 years old). In the last few days I've also been hit with the speaker/headphone problem: no sound from laptop's built-in speakers until I plug earphones into any of the front left sockets.
I've tried all the obvious settings / hard reset etc. without success.
As reported by others, I get an occasional 'cicking' from the speaker when headphones not plugged in - and yesterday afternoon I got sound back briefly a couple of times - but it was intermittent, crackly and didn't last long.
I'm guessing this must be some sort of software conflict as a result of an HP or Windows update but I have no idea how to proceed. Can anyone help?