Acer Aspire One 751h Aound Problem
If you sure the sound problem on Acer Aspire One 751h isn’t cause of the hardware issues then you should keep attention with the software. Each time plug in headphones to play MP3 files over his 751h laptop, the sound has distortion and videos on the internet are clipping and lagging.
Seeing the problem of Aspire One 751h above, thought the windows OS is corrupted or it might cause of bad sound drivers or codecs. Lastly could be the actual sound chip or the port is defective. For this issue you need to try uninstalling the audio driver clearly and reinstall it back with the newest drivers. You can try playing an audio file with VLC. VLC has its own codec built in, and will reveal a codec problem if there is one.
About videos on the internet are clipping and lagging, you can try using a different browser and/or music players. Next step you can do is try uses an updated driver or a different version. If you see all solutions to resolve the problem is going fail, the last thing you
need to do is reinstall windows