If the sound does not work on your Windows 7 computer, try following my recommendations. The first thing we look at is the tray icon, which should not be prohibited. Also make sure that the volume slider when moving up does not increase the sound of the speakers. Next, check if your speakers are set as the default device.
To do this, go to the control panel where you need to find the sound. Run it and put the necessary device as the default equipment. Next, save the settings with the “OK” button. After that, the sound is still not working on the computer? Then you need to check the installed codecs. Although the operating system installs them, just in case download and install K-Lite. I will now list for which formats you will need codecs. This is mpeg, avi, mov, ts, mkv and flv. Is the problem still not resolved? Then check if the drivers for the sound card are installed . Try reinstalling them. Because of them, the sound on the computer often does not work.
Also, your sound may disappear due to various conflicts of the sound driver with the software of other devices. There are times when the sound disappears when connected to the Internet. This happens precisely because of a network adapter conflict with a sound card. You can check for such disagreements through the device manager. An exclamation mark icon on a device will notify you of such problems. In this case, update the software for each specific device.
There are times when the integrated sound card in the motherboard refuses to work. If the sound on your computer does not work under such circumstances, go to the BIOS settings and check if your sound card is turned on there. This is done as follows. At boot time, press the div or F2 key. Go to the integrated devices (or advanced) tab. Search the list of equipment for the name of your card. Found excellent. If opposite it indicates that it is disabled, press the enter button, and then turn it on. Next, you need to exit the BIOS with all the settings saved. To do this, press 10 and select Yes. After that, your machine will reboot.
What else could be the reason that the sound does not work on the computer? When you have completed all the above steps, but did not get the desired result, you need to check the sound card, as well as your speakers for possible inoperability. Both that, and another, it will be impossible to test without the necessary equipment. Therefore, to check the speakers, try connecting them to another computer or laptop, and connect other speakers to your device. If no shifts have occurred, bring both of them to the service, where they will probably find out everything and, if possible, eliminate the existing problems with your equipment.
Here, in principle, and all the reasons because of which for many users the sound does not work on the computer. By the method of exclusion you will be able to find your own. Check your computer and settings, starting from the first point, until you get to the bottom of the true cause of the hardware failure. Also see if the speakers are connected to the audio card and whether they are plugged in.