Why does my sound cut in and out?

My sound is cutting in and out when playing audio. It only works after I position my hands on the laptop in a funky external position or when I smack it in a correct way. Furthermore, the headphone jack only plays audio out of one channel. I've updated my drivers and done multiple audio tests. The problem seems to be internal. Hope you can help! Thanks!

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I'm curious...did the sound work for a long time prior to this? What happened just before the sound quit working?

Bad speakers can (and do) blow audio output circuits. More likely, headphone jacks become intermittent due to the connector getting banged around with headphones or external speakers attached. They break.

Replacing the jack can be (relatively) easy if the jack is on a small daughter-board...you can buy those and swap them out. But.....if the jack is mounted directly to the motherboard then you have to pull the entire thing apart, pull the motherboard out (paying attention to static) then unsolder the old one and solder in a new one. I do this kind of stuff for a living, and frankly I don't like doing it because of the risk something else goes wrong. If you're not experienced with de-soldering (that's the hard part) I wouldn't recommend attempting it on an otherwise-working laptop.

An alternative I normally offer is an external USB audio device. They're cheap and dead-simple to install, assuming you have an available and good USB port. The audio quality is variable.

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1. Click "Start", input "Device Manager" (without quotation marks) in the Search box, and then press "Enter".

2. Double-click "Sound, video and game controllers" to expand it.

3. Right-click the installed Sound Card and then click Uninstall.

4. Restart the computer.

5. Run Windows Update to install the sound card driver.

What is the result?

If the issue still exists, let's move on to disable sound effects and enhancement:

1. Click the Start Button, type "MMSYS.CPL" in the Start Search box and press Enter.

2. On Playback tab, click the Speaker which is used and click Properties button.

3. Switch to Advanced tab, uncheck the "Allow applications to take exclusive control of this device" option.

4. If the Enhancements tab is available, click it. Check 'Disable all sound effects".

5. In Setting section, Select None.

6. Click Apply and click OK.

Besides, please check if there is audio related software installed. You can temporary remove it to see if the issue occurs.

If the issue persists, please help to collect the System Information for further research:

1. Press Start, type in msinfo32 in the Start Search bar and then press Enter.

2. Choose Save from the File menu and save it as an NFO file.

3. Find the file, right-click on this file, click "Send To", and click "Compressed (zipped) Folder".

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