Hi, Not sure if this goes here but I didn't see a specific forum about laptops. Apologies if there is one. Anyways, I bought a refurbished Dell laptop from newegg about 4 months ago. The laptop was great and it charged just fine. After a few months though I started to receive a message saying: "The AC power adapter type cannot be determined. Your system will operate slower and the battery will not charge. Please connect a Dell 65W AC adapter or higher for best system operation." Now this was fine as I assumed it was just a bad charger, so I kept using it how it was and I was just unable to unplug it. The issue I'm now having is that my girlfriend also has a Dell laptop and charger. I decided to plug her charger into my laptop and it was charging normally. After about 2 or 3 charges though her laptop is now getting the same message as me using her own charger. I've never heard of batteries of laptops affecting each other like this so I was curious what the issue was. If anyone has any insight into what could cause 2 chargers to basically become duds and what I should do I'd really appreciate it.