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the official website say that aspire 1640 doesn't support win 7,but try this one,download it and install it global-download.acer.com/GDFiles/Driver/Audio/Audio_RealTek_188.8.131.5291_XPx86.zip?acerid=633640461727576652&Step1=Notebook&Step2=Aspire&Step3=Aspire%201640&OS=X01&LC=en&BC=Acer&SC=AAP_1
If you are viewing/listening on line and it does that but not when you play a DVD or tune from a disk, you have a slow internet connection problem. If it does it when playing a Video/Tune from a disk, download a newer audio driver from your manufacturers web site after downloading the latest Windows update. Hope that helps.
Does the laptop play CDs?
If so then when you start a DVD and before you play the movie, go into the audio setting and configure the speakers for laptop stereo speakers.
If you cannot hear music from the CD then check :-
1. The audio settings, volume not set to minimum and mute is not ticked (enabled)
2. Device manager - sound device is enabled and working, if not re-install the sound driver.
Hi qfabsar, I think you are missing the dvd video codec required by windows media player to play dvds. You could do a search on the net for the missing codec or copy and paste the link below then install ffdshow. This includes codecs for other audio and video filetypes. Always check for viruses and spyware when downloading anything from the net.
Unplug speaker connection. Go to Control Panel, double-click on "Sounds and Audio Devices" and on "Volume" tab make sure "mute" is not checked and that volume is sufficiently up there. If thats ok select "Sounds" tab and go to "Program events", select any Windows sounds and check to see if you can hear the sound by clicking on the arrow next to it. If you can hear sound its ok so then check your speakers connection to correct sound output jack and that external speaker is powered on.