Stuck in stealth mode!?

Hi all I've had my Alienware m15x for about a year and a half now with problems every now and then, most of which I have been able to fix...until now.
Starting a couple of days ago when I started up a game I received extremely low fps (~4fps, where normally i would get ~40 in the same game). So I started investigating and realized that the fans were running slower than usual. I found a program and with it was able to manually ramp up the fan speeds but still received the same slow fps. So now after doing some further investigation online I am assuming the computer is some how stuck in stealth mode. (based on the following thread:: http://forum.notebookreview.com/alienware/323530-question-about-stealth-mode.html

Any help/ideas would be greatly appreciated
Thanks

 

Ok fixed!
So a couple of days ago i remember seeing a warning at start up saying I had an improper AC adapter. It's weird that i recieved this message since although I am not using the adapter that shipped with the computer, I have been using my current one for months.
So at start up I went into bios and turned off the warnings for using improper AC adapters...and viola fans working again and fps is great as usual.

 

Very interesting. Thanks for sharing.

 

If you do not have this you may like to try it. stealth mode indicator.

http://forum.notebookreview.com/alienware/463382-stealth-mode-indicator-9.html#post6589020