My girlfriend recently bought a laptop and it seems not to give out sound! What should I do? If I go to the control panel, I can't alter anything, were there is supposed to be a name of the software running, it says no devices

Go to the manufactures site and download the correct sound drivers there.

My girlfriend recently bought a laptop and it seems not to give out sound! What should I do? If I go to the control panel, I can't alter anything, were there is supposed to be a name of the software running, it says no devices
Have you got any restoring disks? Try them but save what you need first on to disk