Check the speaker connections - take the plugs out and put them back.
Make sure the speakers get power.
Test the sound with headphones.
If it is a Laptop be sure the speakers are turned on (Usually an Fn function key).
Load a system restore
point from a date before the sound problem started.
Has the audio service been started by Windows?
> type services.msc
- then click OK.
In the new window - Scroll down to "Windows Audio"
, right-click on it and select Properties
Another new window - set the startup type to Automatic
, click Apply
and then click Start
Have a look in "Play control" and any other sound mixer you may have installed to check if the sound is muted.
Go to Control Panel
>> Sounds and Audio Devices
Check to see if your sound card is listed.
If no audio device is detected proceed to step 5.
Be sure the Volume is turned up (at least half way).
The MUTE box should not be checked (go to the advanced window and make sure that nothing is muted).
Select the proper speaker settings under speaker settings advanced tab.
Set the speaker setup settings accordingly.
Is your sound card the default playback device?
Right click the speaker icon next to the clock >> Choose "Adjust Audio Properties
Click on the Audio tab and select the correct device.
If you make any changes - click Apply, then OK before you close the window.
If you use another type of audio program, please refer to that program's trouble shooter for diagnostics.
Creative Sound Card owners can try this:
Click Start >> Programs >> Creative >> "Sound Card", for example Audigy >> Creative Restore Defaults.
Check to see if the sound card is properly installed in the Device Manager.
Right click My Computer >> Properties >> Hardware Tab
>> Device Manager >> in the "View" menu - click "Show
If there are yellow or red "marks" next to the audio, "Microsoft
Universal Audio Architecture (UAA) Bus" or an unknown device - install
drivers (see step 6).
If Windows does not detect an ONBOARD (Integrated) sound card >> Check to see if it is ENABLED in the BIOS (Setup).
If Windows does not detect a PCI sound card (an Added sound card)
>> Shut the computer down, disconnect power. Take the sound card
out and put it back again - if possible, use another PCI slot.
Install available Windows updates, including DirectX
Go to Start >> All Programs >> Windows Update.
Install the chipset driver first >> Reboot.
If a "Microsoft Universal Audio Architecture (UAA) Bus" is
present in Device manager >> install the driver >> Reboot.
Uninstall old sound drivers:
Check in Add/Remove Programs in the Control Panel for an Audio device driver (i.e. AC97).
Go to the Device Manager and uninstall the driver (Right click on the device >> uninstall).
Install the sound driver >> Reboot.
The drivers to install can be found on a CD that came with the computer/motherboard/sound card.