Chris, very good description of checking the universal power adapter and followup descriptions about everything else and I certainly appreciate your expertise
But please, can't asking "Is there an outside chance someone has a laptop you could test the universal adapter?" be a consideration?
--- I didn't think it would be necessary to explain why I added that option in there but I guess I'll try
--- I don't know whether or not the OP has the capability to use use a multimeter and that's why I mentioned "if you have the right tools"
--- I more than respect your expertise but I normally look for respectability on everyone's opinions not just mine
ben79k if you know how to conduct Chris' recommendations that's great
--- If not, take the universal power adapter to someone you know who might know how to check the unit with a multimeter
--- So if the unit passes the readings you'll know then it's time to get into the laptop starting with the power jack and into the laptop itself so well described by Chris