Alienware M15x Battery not charging issue

Okay, so --

This laptop is about two and a half years old now, everything except for some extra RAM that I threw in a year and a half ago is factory.  About two weeks ago, I turned on my computer to get a message telling me that the power cable is not the one sent with the laptop -- which it absolutely was.  So, after receiving that message I saw that the battery was no longer charging.  Checking the wattage in the BIOS, it says unknown.  Since then I have tried the following steps --

-Unplug the power adapter and the battery, let it sit for 45 minutes before plugging it back in.

-Unplug the power adapter and the battery, hold the power button for 30 seconds (And longer, just in case) before plugging it back in.

-While it is plugged in, remove the battery, wait for a few minutes, and ease the battery back in.

-Uninstall the battery drivers to force Windows to reinstall them.

-Updated my BIOS (I was on A06, got up to A08 but A09 doesn't seem to have one that works with my 64-bit version of Windows Ultimate.  (This was a just in case act)

-Purchased a new power adapter from Amazon and tried it.  (Says 130W in the BIOS)

The only thing I can think of (and/or found on the internet) is to completely drain the battery of life and then try to charge it, but I figure that is risky at best, as I currently only have 29% battery life and if the cable comes unplugged while I'm working on a program (I'm a student in college), then I can lose a lot of work.

So, does anyone have any ideas?  I would really like to not buy a new battery unless I have to -- and even then I am not sure if that would solve anything.