No sound is heard on the new computer or after Windows has been reinstalled. Some computers do not have internal speakers, they have to be installed externally. The audio card is often integrated with the motherboard for computers from HP and Dell.
How to fix sound problems:
1. Check if the external speakers are connected properly. The speakers should be turned on and speaker volume should be set suitably, so that sound is audible. If the speakers are connected properly, check them on another computer. If the speakers are working properly on another computer, there may be a problem with the audio card. If not, you may have to replace the speakers.
2. If the sound problems occur intermittently, there could be a interrupt conflict problem. Uninstall the audio and sound drivers and restart the computer. The computer will automatically reinstall the required drivers and the problem will be resolved.
3. No sound is heard for a new computer. Find out the manufacturer of the audio card for the computer and visit the manufacturer's website. Download and install the latest drivers for the sound card. Sometimes, the drivers may be available with the motherboard/drivers CD.
4. The sound suddenly disappears - the audio drivers may get corrupted. Download the latest drivers from the manufacturer's website.
5.Check if audio has been enabled in the BIOS setting . All volume control settings in the control panel should be appropriate. Windows audio should be running in service. The sounds should not be muted in control panel.