Is my laptop damaged?

When my laptop is connected to the battery and I run my palm over it, there are sound waves or vibrations (I don't know what to call that)

Is that normal?

I do not understand. How does that sound like?

Then it's electrified… I think.

http://www.hifi-forum.de/viewthread-29-3190.html

The grounding is then probably missing.

You can't hear it, but you can feel these wave-like vibrations or something like that

But is that normal?

Shouldn't be so. Read more about it in the forum

What could that be?

Poor insulation of the cable layer

This is most likely the hard drive in combination with the fan.

What does this mean?

Is there something damaged?

No

Google

This could be your static electricity in your hand. Otherwise this is normal.