i installed windows 7 on my laptop and the laptop speakers do not worke but the headphone have sound
That's not necessarily true. If he has a USB headset, then it has its own built in sound driver independent of the OS. Is this the case hassan? If so, then go to the laptop manufacturer's website and DL the specific audio drivers for your laptop model and your speakers should work.if he didn't have the manufacturer sound drivers installed he wouldn't get any sound out of the headphones