Windows7 no sound, no sound solution when booting

Question: I don't know what's going on, there is no sound when I turn it on. Let's see what's going on? Can solve it. Answer: 1. Check whether the sound card, cable, and other devices are connected properly; run anti-virus software for anti-virus; 2. Right-click "My Computer"----<quo;Properties>---“Hardware ”----<quo;Device Manager”,Open“Sound, Video, and Game Controllers There is no problem, that is, whether there is a yellow color in front of it" The driver solves the problem; 3. When there is sound but no small speaker, open the control panel----sound and video equipment----volume, and put the check mark before putting the volume icon into the taskbar; 4 When there is no sound and no small speakers, open the control panel----Add and remove programs----Add and remove Windows components, check the number in front of "accessories and tools", click “Next”, Then, shut down and restart, the system will prompt to install new hardware, follow the prompts to install; no microphone: 5, double-click the small speaker - option - property - press the "microphone" in front of the hook to adjust double click right Small speaker in the lower corner, then find the wheat Wind option. Just set it up. In the sound interface, click on the option —— attribute, which has a microphone and a check mark. 6, uninstall the sound card driver, re-install or upgrade the audio driver; 7, when installing the sound card driver appears "can not find the AC chip", prompt, may be computer poisoning, or accidentally deleted the sound card due to illegal operation The driver, or the internal software conflict resolution method is to reinstall the system and driver 8, simply ignore it, wait for a while after shutdown, and then reboot, sometimes the sound problem will solve itself. You can try 9, start & mdash; Control panel & mdash; sound and audio equipment & mdash; sound, see if it is silent, then select windows default 10, click start-run, enter regedit, enter, this opens the registry, click HKEY- CURRENT-USER, click on the ControlPanel item, and then click on the Beep in the Sound below to change its value from No to Yes. Is it possible to hear the long-lost switch sound? 11. Delete the original account. , create a new account, so that the switch has a sound, may be caused by a user configuration file error, you can first open the guest user guess t, restart to try to see if there is a switch sound, if there is any, you can use the above method, first create an administrator account, then click on your problem account, and then follow the prompts to delete In the process of deleting, it will also prompt whether to keep the files of the original account. When deleting, it is best to back up the favorites, as well as the folders created by the installation software in the start menu, and then copy them later. It’s ok