Tonight I just installed a new Zalman heatsink on my x800xl and now i get an error when booting saying that i need to reboot and select proper boot device. Of course im booting windows xp from my hdd, It was working fine before my new heatsink, My harddrive is recognized in BIOS and I hadnt altered the wiring in any way, I am totally stumped and agitated and would love your guys help