acer Aspire 5 A515-51-38KX electric shock problem

faysal71 
This happens because of the difference in the electric charges between you and your device. As you said that your laptop was connected to the charger when you faced the issue, the laptop might not be connected to the grounded outlet.

They are not vibrations. They are micro electro shocks. They are harmless (not enough current to electrocute you). The metal (aluminum) body is under electrical tension while charging, generally due to a faulty grounding circuit or cable, which is a very common situation in most buildings, and the electricity discharges through your body.

In some cases, this can be harmful for the internal (minute) components of your laptop in a long run, but once in a while, the laptops can bear such inductions.
To avoid this in future, you can follow the below approaches:
>>Check if there is proper grounding done to the power outlets in your home and work place, and always connect your laptop to a grounded outlet.
>>You can place an anti static floor mat at your work place and home.
>>In case of improper grounding, before touching any internal components of the laptop, touch any metal object with your hand. This will ground you, hence neutralizing any static charge that your body may have gained.

You can also contact Acer support in your region and report the issue.
Acer worldwide : http://www.acer.com/worldwide/support/ 

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