M15t4B

I have purchased the Colorgraphic Xentera GT 4 AGP for my carputer since it had 4 DVI/VGA connectors for 4 monitors, thinking I could have a different thing on each monitor like in the IDF conference. when i got it i took my computer inside to install it and everything seemed to work fine, I had a video running on every monitor. Then when I turned my ignition off my computer just sat there running and it would not hibernate. I took a look at the power settings of my computer and the hibernation tab was no longer available. Seems that the bios on the multi port video card does not support the windows advanced power management. Does anyone know of a way to manually override the windows power management and get the hibernation to run or am I going to have to get a new video card or live without hibernation?