Problems with playing sound on a PC canbe caused by several reasons. Let's look at the main ones. The very first level to be checked is the BIOS. If the sound card is based on the popular Realtek ac97 codec and is built into the motherboard, you should check if it is included. The BIOS section, where to look for sound card settings, is called the Internal Perpherial. After enabling this function, you will need to download the system and install the driver either from the motherboard installation disc, or downloaded from the official site of the motherboard manufacturer in advance, but the latest version usually lies on the AC97 official website. If after all these manipulations the sound does not work, then, possibly, a conflict of equipment has occurred in the system. Determine if the system has devices that can "sit" on the same address spaces and interrupts. Although for modern Windows systems this is a rare case. Most likely, the codec's chip is simply damaged. Then the output is to install an external sound card in the PCI slot. Pre-faulty must be disconnected, again, through the BIOS.
There is also another level of problems associated withincorrect operation of the operating system. One possible reason is that the audio service is not running. Go to the "Control Panel", the "Administration" icon. Choose "Services". If the Windows Audio service does not work, try running it. If everything turned out, then congratulations. You can enjoy your favorite tunes. You have overcome the problem "the audio service is not running." But it happens that the computer gives out errors. They can be very diverse. There are two universal ways to eliminate them. We'll tell you a secret - no matter what mistake. The solution will be effective even if the audio service is not started in a relatively new version of Windows. Windows 7 is no exception. The first method is designed for the user, who is not "accustomed" to anything, except for the graphical interface. Just go to the "Standard" menu and select "System Restore". Then select "Restore an earlier system state". A calendar is displayed, the bold numbers of the month when the system restore point was made are highlighted. Now we just need to remember the date when everything was still in order. We choose, we wait for several minutes and everything is ready. But another scenario is possible. You came with the menu "System Restore", but there are simply no recovery points. This may be due to the fact that someone turned off the system restore service, and then turned it on.
Then the problem of reconstructing the soundbecomes more complicated. You will need to arm yourself with a Windows distribution and load the Recovery Console (reach the point where the system prompts you to press the R key to load the Recovery Console). Then it will be necessary to copy the SYSTEM file from C: WINDOWSSYSTEM32CONFIG just in case C: C: WINDOWSSYSTEM32CONFIGSYSTEM C: command, and then replace our current SYSTEM with the version that was immediately after the system was installed. It should be noted that during this operation we will have to show the system where all the drivers from the devices are located. An alternative to this operation can be to find those system restore points that may have been saved in the System Volume Information folder on drive C. But back to our operation to bring the Wndows services to order. Copy the clean hive registry copy C: WINDOWSREPAIRSYSTEM C: WINDOWSSYSTEM32CONFIG and agree to a replacement, because the backup copy of the old SYSTEM we have. We try to load the system with a new file. Most likely, the problem "the audio service is not running" will go into oblivion, as all the dependencies are met this time.
If the audio service is not started and after allevents, you should restore the old file and try to use the command to check the Windows system files for integrity. To do this, open the console (Start> Run> cmd) and type sfc / scannow. Pre-do not forget to put the distribution of the installed version in the drive. Comparison of the versions of files will be made and, if the incorrect versions are found, they are replaced. The difference between the two above methods in their universality, the problem with the lack of sound can be solved in another way, but the methods given are a guarantee of 90%. There is also a "cosmetic" problem when with the installed Realtek HD codecs the system gives out that the audio service is not running, there is sound, oddly enough. This is because the sound card driver boots before the Windows service and "thinks" that Windows Audio does not start.
