Have Laptop Compaq N610C,P4,512mb ram.windowsxp pro sp3. Yesterday it was working.I did not install any new hardware or program.I usde headphone to listen music.Today When I played music,there is no sound.I checked the connections.uninstalled the driver and reinstalled the sound driver but no sound.I checked it has all properties on.no mute on. Please let me know what is the problem.

Other than 'no sound on headphone', does sound work without headphones (like over the speakers) ???? Plugging headphones in and out, can over time cause the female socket to break inside. Or cause a weak contact with the male plug.

thanks.there is no sound in the speakers after taking out headphone jacks.

Plugging in headphones, unmakes contact of power to the speakers, and routes power to the headphones. Like I said, you likely have a female socket problem. Those Laptop sound sockets seem rather cheap to me. OR Try System Restore to a date when all was good. Start >All Programs >Accessories >System Tools Using System Restore too many times can cause more harm than good. After doing a restore that does not fix a problem, then UNDO the Restoration, and try another restore point, or just do the UNDO. Other than that, you have a hardware problem like a socket.

Another thought ---- My Compaq Laptop (2103US) has a tiny button, at the side of the Laptop, that when pushed would stop sound to the speakers.

THANK YOU VERY MCUH. I DO HAVE TWO BUTTON USED TO INCREASE AND DECREASE SOUND ON FRONT PANEL. I TRIED BOTH OF THEM .NODIFFERENCE.I THINK WHILE GOING BACK TO HOME TONIGHT,FIRST I WILL RESTORE SYSTEM TO A WEEK DATE BACK.IF NOT SOLVED THEM WILL INSTALL SOME NEW AND DIFFERENT DRIVER???????????????

"Plugging headphones in and out, can over time cause the female socket to break inside." I agree with Chuck2. The problem is most likely the headphone jack has a problem, and is not letting the audio through to the speakers..