I currently have a Dell Latitude D610. It is the one with the GHz processor. It is maxed out at 2gb ram. It has an 80gb hard drive(From what i see 80 may be the max).I would like to know what the real limit is? The original charger broke years ago and it now operates off an acer adapter. The battery is original but It hasn't worked forever. Im not sure if its shot or that the 3rd party charger wont charge it(Dell is notorious for that I hear). The Bios doesn't recognize it either. Id like to know if that is the adapters fault or not. The Bios is updated to A09. If i flash an intel bios would it bring any major advantages like bigger hard drive limit or support more ram? Finally, Whats a good OS for the Pc? It currently has Windows XP professional Sp3. I have tried Vista on it and it ran fine but I never bought a license because of Vistas problems. I do have Ubuntu 14.04 installed on a 20gb hard drive made for a inspiron 2600(The computers shot) that I use in the D610. That works great but I would like to have windows on the main disk.