BIOS update, no battery. Please help...

Hey there everyone I've been trying to fix this for ages.

I have an alienware m17X R3

I did a clean install of windows 7 and manually installed drivers from the dell website using my service tag and following the installation order. However, after trying to run some games, I noticed my FPS was awful. So I looked around a bit and decided I wanted to disable my Intel HD graphics within my BIOS. However, my BIOS version is A04. The dell website suggests I upgrade to BIOS version A12, which comes with the ability to disable Intel HD graphics, as my current A04, does not.

Sadly though. I have no battery that works, resulting in the BIOS exe file telling me I need at least 10% battery to begin.

Now here's the stressful issue. /forceit does not work. I can't flash from a USB as the file cannot be run from DOS.

The only soloution I have seen is disabling the battery check. I read on a forum that someone did this to fix their issue, but they did not reply with how they actually did this.

Please help me guys...

EDIT: I managed to update the BIOS. I have no idea how, but the battery randomly started charging for a bit resulting in a enough charge for the file to run. This didn't solve my issue though. I still have incredibly low fps consistantly on every game I play, on the lowest settings. When I was in the BIOS I enabled "Adapter Warnings". This resulted in a small DOS message upon boot telling me a 130AC adapter was detected which was less than the required 150AC and that performence would be adjusted based on this. What I fidn strange is that this is the same adapter that came with the laptop and has worked for ages.

I tried playing a game without the charger in, I went into battery performence settings and tried to set everything to max regardless of whether it was on charge or on battery. This still had no effect.

EDIT 2: Made a new post, relating specifically to my graphics issue now as I no longer need help with the BIOS, this can be deleted I guess.