My computer sound is not working even the sound driver is installed

HI,
i'm using windows 7, my computer sound was working perfectly, recently i tried to update my sound driver using DRIVER BOOSTER, after the update there was no sound when i tried to play music an ERROR appears, then i uninstalled it, still not working, i went
to DEVICE MANAGER, to check my SOUND DRIVER it says '' This device is working properly.'' though i get no sound.
NB : my sound driver is 'Realtek high definition audio'.
help me please.

First you need to go find the correct driver for you computer. If it is a dell, or similar model go to the manufacturers website. If not then go to Realtek to download the proper driver by model number.
Download the correct driver for your model soundcard.
You need to uninstall your current sound card driver. restart your computer
Upon restarting you can then install the proper driver by running the program you downloaded.
P.S. Only get your drivers from the manufacturers, third party drivers, like Drivers Dot Com and many others are just BAD to put it nicely. They rarely have the correct ones and more often then not add extra programs to the driver packages.

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