Dell Studio 1737 power adapter not recognized. not charging, Tried everything?

I have two dell 1737's with 64 bit vista. Both of them showed the bios adapter warning- "cannot determine power adapter type, please plug in again, blah blah.."

I looked into it, and bought two of those charger boards that include the two usb slots on ebay from the same guy. Put it in the first studio, and everything worked great. Battery charged, and I even took the battery out of the other studio and charged it with the working one. (thus confirming both batteries are in working order)

Tried putting the 2nd charger board into the second laptop, and nothing changed, still plugged in not charging. I used multiple adapters on the 2nd studio, which worked with the first one, and have the same output as the computer needs for input. (confirming the power adapters are fine).

I had the old a06 bios on there when it wouldn't charge, so i flashed up to the a09 with no luck.

I am just confused because it seems as if I have changed all of the common culprits for this problem, and my warranty ended in February of course. Any Ideas?

Since I've replaced the mini board, and the adapters and batter