My mother has a Compaq 610 running Windows 7 Ultimate. The problem here is that it is not charging when it is plugged in. It does take power from the power supply but the battery is not charging. The power supply (from the transformer to the computer) is genuine HP and this laptop has always used that transformer, the rest (plug to transformer) I don't know.
Also, we have changed the battery and after a day the same thing starts to happen. I would appreciate any help regarding this problem and if there is anything I failed to mention please let me know.