The third problem I started facing on my new Dell laptop was that now and then, despite using the AC power adapter or charger which came along with the ultrabook, I frequently got to see this message ...

I repair computers for a living. However, I'm currently a bit confused. I have a Dell Latitude D620. I'm sure any seasoned Dell user knows the familiar warning: "Your AC Adapter can not be identified.

One of the advantages of notebook PCs is that they can be used in places where power cannot be secured due to the built-in battery. However, there are times when problems occur with older models, and ...