ASUS P4C800e Del, P4 2.8 Northwoods w/fan, Nvidia GeForce 6600GT w/fan, 80gb ide WD drive, 250gb SATA WD drive, DVD burner, 3 case fans, 440 watt power, etc. C drive crashed, replaced with the 80g drive, had to reload XP, now it's Pro,was Home. Now on startup a window tells me the video card isn't getting enuf power so it's slower than it should be. Still works OK just for normal browsing. Nothing really changed as far as hardware. Does XP Pro have an extra feature that tells me if the video card isn't getting enuf power that the Home version doesn't? Been that way about 18 months (with XP Home) and no apparent problems, did video onto DVD fine and everything. Going to add another 250g SATA, so am going to a 550watt Ultra anyway, but just curious. Thx!