Yeah im trying to get a mini server up and running. I came accross the same problem, after a day of reformatting and clearing the bios. Personally i think its a bios setting. But im basically installing windows xp home on a fresh hdd. It gets into the installation of windows but gives the blue screen with bad_pool_caller. I dont have any cards in it, cause the video is onbord. I'll let you know if i figure it out. I tried unplugging the front usb ports to see what happend and it eventually worked out for me. Had to restart once but went fine after that. So basically it was a unplugg everything u can from motherbord, cmos flash, low level format hdd, boot from cd, install windows- fresh copy, install drivers and all done hope it helps.