I just found a solution to a problem that I found posted on this site, unfortunately, I now cant find the thread, so I thought I would describe my situation,
I have a Dell latitude D620 with "a so called problem" with the adapter so it no longer charges the battery, I thought that updating the firmware might solve the problem with the adapter not being recognised,(even though it is brand new!!) so I attempted to flash the BIOS, only to be given the message, "The AC adapter and Battery must both be connected, before flashing the BIOS", so I was screwed or so I thought.
The solution was simple:-
First download the BIOS update, to a folder that you can remember easily or to your desktop, for example mine was D620_A10.EXE and it was located on the desktop.
Next type cmd in run and press enter,
then at the prompt type cd desktop , you should then see something like this C:\Documents and settings\rob\desktop
now type in the folder name of where the update is located, or if its on the desktop simply type in D620_A10.EXE <--- where that is the name of your bios update now if you were to press enter it would bring up the dialogue saying "The AC adapter and Battery must both be connected, before flashing the BIOS" so here s the great bit, simply type /forceit after the .exe with a space and sit back and watch the update!!
example C:\Documents and settings\rob\desktop>D620_A10.EXE /forceit
Sorry if this sounds pointless and totally random but I spent hours serching for a solution, many of which involved building devices to trick the laptop into thinking there was a battery connected and such, and then after a bit of luck and a little bit of trying and failing, combining this and that, I tried this and blow me it worked!!. Didn't solve the AC adapter cannot be determined message but Im happy to solve one issue. Anyway first post ever so sorry if i sound stupid or my explaination isn't clear, message me if thats the case and ill try my best to help:iagree: