Dell Inc
Endless trouble w / faulty M4400. Dell exchanges for DOWNGRADED machine! Twice!
I have had the M4400 since Dec. 2008.in that time, I've had severe heat issues, a faulty keyboard, bios version incompatibility with installed hardware, downclocking of the video card, hardware incompatibilities with the preinstalled Dell software, and finally system failure (blue screen of death) ...