Windows7 has no sound solution

1, check the sound card, cable, and speakers and other devices are connected properly; run anti-virus software for anti-virus; 2, right-click my computer ---- property --- hardware --- device manager Open the sound, video and game controllers with or without problems, that is, see if there is any

1, check the sound card, cable, and the speakers are connected properly; run anti-virus software for anti-virus;
2, right Click "My Computer"----"Properties"---<quo;Hardware>----<quo;Device Manager", Open “Sound, Video, and Game Controllers” No problem, that is, see if there is any yellow in the front <; If yes, reinstall the driver of this device to solve;
3, when there is sound but no small speaker, open the control panel ---- sound and Video device----volume, in &ldqu o; put the volume icon in the taskbar & rdquo; before the check mark;
4, no sound and no small speakers, open the control panel ---- add and remove programs --- add and remove Windows components, in & ldquo; Attachments and tools & rdquo; before the check, click & ldquo; next & rdquo;, 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 --Options--Properties--Press the hook on the front of the microphone to adjust the small speaker in the lower right corner and find the microphone 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 "ldquo; can not find the AC chip", suggestion, there may be computer poisoning, or because Incorrect operation to delete the sound card driver, or internal software conflict resolution is to reinstall the system and driver
8, simply ignore it, wait for a while after shutdown, then restart, sometimes the sound problem will solve you may wish to try
9, start & mdash; control panel & mdash; sounds and audio devices & mdash; the sound, tune into see if it is silent, and then choose the default windows

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 to change its value from No to Yes. I didn’t hear the long-lost switch sound.
11. Delete the original account and create a new account. This will turn the phone on, so it may be used. The problem caused by the configuration file error, you can first open the guest user guest, try again to see if there is a switch machine sound, if any, you can use the above method, first create an administrator account, then click on you The problematic account can be deleted by following the prompts. During the deletion process, it will also prompt whether to keep the files of the original account. It is best to back up the favorites when deleting, and install the software in the start menu. Create the folders, and then copy them over and you will be able to copy them.