|Exactly how many times are you going to risk electrocution before you stop using it.?|
Call an electrician. The kind that wires up homes and has a state or some legal license for your area.
I get the feeling your home is OK, Other things would be showing up but it can't be sure. I suspect the laptop is the issue.
Generally, ac to dc adapters ought to be fully double insulated and should NEVER allow line voltage to happen.
It could be that some other device is plugged in that is causing it.
A Pit Bull is like a gun you can pet. And there is no safety on it.