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You need to install asound driver so to make your audio device be detected by your computer system.There are several ways to do it. One is to re-install your motherboard driversby your motherboard driver software cd. The other one is for you to buy Drivermagician, a software that searches all the drivers that your computer needs. Drivermagician will search and detect all the driver that your computer needs. Allyou got to do is to select them and then by clicking on download, drivermagician will automatically search the internet and download it for you. Andthe last option is for you to visit your motherboards website and download yourmotherboards driver there. Have a nice day friend. Hope this would have apositive effect on your computer problem.
Try to find that same file online and available for download. Download it to EXACTLY where you deleted it from, and then It should work. Also, you probably shouldn't go through files such as that. You may cause a critical system error and irreparably damage your computer.
For VGA driver visit manufacturers web site,and download the driver.
For sound follow the steps below.
1. Go to control panel>Device Manager 2. Select your audio device, check the properties 3. Check if its disabled. if not then upgrade or reinstall the driver. 4. If not working then check master volume control, if its mute by mistake. 5. If still not working, put external speakers and check if sound is comming. 6. still sound is coming then need to check & change your laptop speaker. 7. If still no sound, then need to check your motherboard.