I have a Dell Inspiron 8600 laptop from fall 2004. It won't play any sound at all anymore. I've checked all normal settings, and I even tried reinstalling the driver and I tried Windows Restore. None of it has helped, which leads me to think that it is most likely a hardware problem.
The problem occured on thurday night 10 days ago, when a guy borrowed my laptop to make a video presentation, and then he told me that they couldn't get any sound. They had tried to check what was wrong and tampered with some of the settings, but nothing serious.
I had a similar problem in fall 2005 (when it was still under warranty). I had hooked the laptop up to a soundboard through the minijack-phone-output, and since there was a mismatch with the electric polarities of the laptop and the soundboard it was too much for my soundboard. My dealer had to change the entire motherboard, which would have cost me £700 had it not been under warranty.
Can someone help me? Will I have to change the motherboard?