Make sure sound is not mutted in your volume control. Then check your hardware/sound in the control panel, that something is not disabled. If still not working check the device manager. Could be when you reformatted the sound driver is missing.
The information on Computing.Net is the opinions of its users. Such
opinions may not be accurate and they are to be used at your own risk.
Computing.Net cannot verify the validity of the statements made on this
site. Computing.Net and Compnet Ventures, LLC hereby disclaim all responsibility
and liability for the content of Computing.Net and its accuracy.