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WHAT OS? XP?
learn to use the control panel. (more later)
the special keys like this can fail for 3 reasons (get it serviced)?
bad hp keyboard driver, (or wrong one, or missing)
virus infecttions (or worse root kit attacks)
click control panel
now click tab sounds
in the top roller button , pick no sounds (bingo all sounds gone)
error sounds and all
or pick any sound seen there, and make it go dead, or change it to any thing, (endless, choices) even sound of silence. is possible
like this , nosound.wav.
or to pindrop.wav
Sound errors can occur for a variety of reasons such as outdated drivers or checked mute buttons. However, if you know how to use the Sound Troubleshooter tool on your Windows computer, you can effectively deal with sound issues on your device.
Go to the "Start" menu and click "Help and Support."
Click "Fixing a problem." Click "Games, sound, and video problems."
Navigate to "Fix a problem." Click "Fix a problem" to cause the Sound Troubleshooter tool to appear.
Choose the button that best describes the audio issue on your laptop or desktop. Hit "Enter." Windows identifies possible sound issue remedies and provides you with directions to repair your audio issue.
Try installing the latest audio driver.
Download the drivers from the Acer WEB site. Make sure youselect the model of your laptop and the XP or Vista version of the drivers youthat require and it matches the Windows version that is installed on yourlaptop. Use this link to get to the Acer support: - http://www.acersupport.com/drivers_download.aspx
Hi, Please update Sound driver from Hp.com and try If you dont have any control on Quick launch buttons to turn on Volume, update Quick launchdriver. If that does not fix the issue, if you have to replace Speakers on the laptop
This could be a simple driver glitch. Try uninstalling the audio drivers from the device manager, then reboot. The machine will find he sound card and reinstall the drivers automatically. Then go to HP's support site and check for any updated sound drivers or patches. If it's a glitch this will fix it. Keep in mind that it could also be a hardware problem with the mute switch, so if the driver procedure doesn't work, you might consider having it serviced.