The power failure in the morning, and when the call, the speaker did not respond, and then listen to the sound with headphones
1, socket contact is bad, the power line contact is not good, causes the computer sound box indicator not to be bright.2, plug in the computer to try, look at the computer speakers can not sound, if you can sound, that is, the computer speaker indicator light is broken.3, check the computer speakers, connecting lines, and speakers and other equipment is connected properly.4, open the control panel - add new hardware - next, after the search is completed, point "no, I have not added this hardware", click next. In the dialog box that appears, select click finish, close the no computer, and restart to add new hardware". Note that this is called after shutdown and not restarted. In general, problems can be resolved after rebooting.
7, and can not solve the problem, it had to reinstall the system and drivers, all problems will be resolved, but the premise is that all kinds of hardware in good condition, the software does not conflict.8, you can gently tap the computer body shell, notebook computer can cover the lid when the force is a little bigger than usual, so that some loose parts restoration, wait for a time after the shutdown after the restart, sometimes sound problems will be restored.
5, right-click on my computer - "property" - "hardware" - "device manager". Turn on the sound, video, and game controllers. Is there a problem with "yellow"?". If you have, uninstall it first, and then put it into the CD drive disk to reinstall the device driver.6, if the "device manager", "sound, video and game controller" is not the sound card hardware, it had to find your sound card, integrated sound card, the model must be accurate, found in the confirmation card, and then driven into the system disk, install the sound card driver.
