Charger issues

[GTvsForza]

I have an HP OMEN with a 120W power adapter. Recently, the charger wouldn't charge the laptop when it is on. I took it to Best Buy and said the power strip I had it plugged into couldn't handle the charge. I was at my grandparent's house at the time.

Now, it's doing it again at my house. I have a pretty old strip as well, but it still charges when the laptop is on. I found out that it still charges when the laptop is off.

I don't think it's the power in my house that's the problem since it's only 10 years old. Could it be something in the computer or charger?

 

[GTvsForza]

Found the problem. It was my charger. More specifically, the cord that runs from the wall outlet to the adapter. I had an extra one and swapped it with the other one to see if that was the issue, and it was. I think the other one didn't work anymore since I yanked it out of the outlet from school when class was finished, and when I heard a pop when I plugged it into the strip at my grandparent's house.