No sound or audio

What type of laptop HP , ASUS , COMPAQ , ACER ?..........
Up the Volume on My HP Laptop
Open the "Start" menu and click on the "Control Panel" icon.
Locate and open the icon that deals with sound.
Depending on your version of Windows, it will say either "Sounds and Audio Devices" or "Adjust System Volume."
Adjust the volume under the "Speakers" icon.
To do this, click on the slider bar and move it up on the slider.
If you need to decrease the volume, simply move the slider bar down.
Click on "OK" when finished and close the "Control Panel" window.
Click on the speaker icon in the bottom-right corner of the screen for a faster volume adjustment. Simply move the slider bar up to increase the volume and move it back down to decrease the volume.

Volume on an Acer Laptop
Acer laptops are typically sold with pre-installed Windows operating systems that offer sound-adjustment features for increasing the volume on the laptop's built-in stereo speakers.
These same functions can also be used in tandem with external speakers or headphones to increase the volume, as well as mute all sound on the laptop.
If the computer should output an unusually low volume, fixing the problem may be no more involved than sliding a control switch with the computer mouse. Click once on the speaker icon in the taskbar on the lower-right corner to open a rectangular window with a slide control.
Click and hold the left mouse button on the slide control to drag it upward, increasing the volume to the laptop's maximum setting.
Click the "Mixer" button below the slider control to open another window with volume controls for "Speakers" and "Applications," adjusting each slide control upward to increase the volume.
Be sure the speaker icon below each control is not accidentally muted.
Click once on each speaker icon to remove the red circle with a slash through it, which will restore audio.
Click the Microsoft flag or "Start" button in the lower-left corner if the shortcut speaker icon is missing from the taskbar.
Click "Control Panel" to select "Adjust Sounds" from the Hardware and Sounds category.

try either right click the speaker icon on the bottom right hand corner of the screen "open volume mixer" click :devices" and select the card you installed. if that fails, go to device manager and disable any other cards the the computer has so it wont conflict. if that fails take it into geeksquad at best buy to see what is going on.

click start right click on computer select properties then device manager scroll to sound and video game controllers if you see a yellow question/exclamation mark or a red X the driver will need to
click start control panel hardware and sound manage audio devices right click on your speaker select configure speakers
right click on the speaker icon in the bottom taskbar you will see an array of options select playback devices make sure it has a green tick and the correct speakers are selected
be updated if you computer came with a motherboard disk the drivers could be on it although once speakers are connected widows 7 should automatically update the drivers
click start control panel hardware and sound manage audio devices playback you might have to set a default go for via high definition audio then right click on speaker
you might have to configure them then select properties you will see tabs general level in this tab make sure your settings are loud enough also enhancements and advanced from the drop down
list in the advanced tab select dvd quality or another then apply

right click on the speaker icon in the bottom toolbar select playback devices should be a green tick in the speakers if not right click select configure also check the communications tab make sure the are not muted
hope it helps

First reboot, if you sound has worked before this may help. If not try a different file or you tube video it may be that the file doesnt have sound. Third mke sure your physical button on the laptop is turned up, and Fourth the speaker icon in the bottom right hand corner, if you right click it is it muted? Is it turned down? Get a file or disc that you know has sound on it and that has played before. If this still doesnt work it is a possibility that your audio driver has become corrupt. Try looking for an updated audio driver by using either that manufactures web site or the Microsoft Custom tab when you update windows.

you might have to select stereo speakers in the drop down list
if your computer came with a motherboard disc the sound drivers could be on it
you might have to uninstall then restart your computer then reinstall both the sound drivers and the sound card make sure you have both of these devices backed up to a disc before uninstalling
a yellow? question mark means you need to install/update driver to do this
right click to install driver also
click start control panel administrive tools computer management device manager scroll to sound,video and game controllers you might see a yellow question mark? Right click to reinstall drivers
click start control panel sounds and audio,volume,advanced,speakers select appropriate speakers also audio you will find 3 drop down lists make sure you have the correct settings there
also
click start control panel sounds and audio devices you can adjust the volume there also select speaker volume you can change your settings there you can also tick in the box place icon in taskbar
if his does not fix the problem

have you tried this control panel sounds and audio,volume,advanced,speakers select the appropriate speakers from the drop down list or navigate to the device manager scroll to system devices + to expand,system speaker right click properties then select use this device (enable)

hope this helps
dont forget to vote

If you are using Windows Vista, or XP: look in the bottom right corner of the screen and you will see a small speaker icon. Click on this. Next you will see a check box for "mute". Ensure this is not checked.

Also, in the search box under the Start File Menu (bottom left corner of screen {windows button} ) go to control panel: make sure that Control Panel Home in the top left corner is slected. If not, select it: then scroll down and click on sounds and hardware. Here you will be able to adjust audio devices, sounds. etc.

After you have made any changes, restart the computer to ensure the changes are made, and test the speakers.

Please let me know if you need further assistance.

carsandcomps,

Guru, Premium Expert @ Fixya.com

Two possible causes.1) Vol Settings changed in windows2) Bad hardware
1) Check your system's sound settings:

For Xp

• Goto Control Panel
• Double Click Sound and Audio devices / Sound, Speech, and Audio Devices
• In device Volume Click Advance
• Master Volume Control Window will open
• Increase all the volumes to max, also make sure that Mute us UNCHECKED.

OR

• From the bottom right corner of your screen in system tray, double click a small speaker icon and open Master Volume Control.

For Vista and Windows 7

• From system tray (its at bottom right corner of your screen) double click on small speaker icon, it will open Volume mixer
• Increase the volume to max.

2) If this does not work, then test your speakers by connecting it to some other system and vice versa.
If you get desired sound volume when you connect some other speakers to your system, then you have to change your speakers. And if your speakers are working fine on other system then you may have to purchase a new sound card.

Have you tried a plug in headset mic ? Right click the little speaker icon in the bottom right corner of your screen.Left click Adjust audio properties and go from there.

Looks like your audio drivers have gone. have you tried system restore? Go to start, all programs, system tools system restore, then choose a previous date when your sound was still ok.

If you are running windows,go to the bottom right-hand corner where the clock is and click on the little red arrow. A little row of icons pops out-there should be a little picture of a speaker, left click it and make sure the slider is all the way to the top and that the mute check-box is not selected. If that dosent help go to Start-Control Panel-Sounds Speech and Audio Devices-Sounds and Audio Devices and make sure that the Mute option isnt selected in the Volume or Audio Tabs. Also make sure that the volume slider are at maximum and that you click 'apply' for the changes to be applied.