i have a dell inspiron 9400 and i unplugged it to show someone something. later i plugged it back in because the battery was at 17% and in the corner i noticed the little lightning icon symbol on the battery wasnt showing up to show that it was charging. when i hovered over the battery icon it said plugged in, not charging. i dont think its the a/c adapter because i took the battery out while it was plugged in and it is still on. so do you think i need a new battery?
was it always plugged in? like at least 85% of the time? if so, that may be the problem... always take your battery out when your ganna use the a/c adapter for an extended period of time.. Try getting a replacement from dell if you still have the warrenty.