I am trying to fix my son’s laptop with no luck. The problem is the hole were you plug the adapter from the laptop to the wall.
1. Why do you think it's
the "hole"? When you make the connection, does it feel any different than the one on your laptop?
If the "hole" seems OK (or even if it doesn't), take the "
battery" out before trying to troubleshoot an AC adapter power problem. A laptop should be able to run on AC adaptor power alone (DC power from adaptor). The "battery" itself could be the cause of your problem.
If you're willing to "risk it", does your son's adaptor work on your "identical" laptop? Are the cables securely inserted into their connections on the "housing" in the middle of the adaptor cable?
2. For that matter,
what issue are you trying to resolve? You haven't presented any "symptoms" or "evidence" of a problem with your son's laptop...