ABit IT7 Max 2, P4 2.4, XP Home OS. Evidently picked up a virus, and all screen would say was "Out of Range." Reformatted and repartitioned HDD and reloaded OS. I had unhooked all hardware except DVD-R drive and HDD before starting. Installed mobo drivers, video card drivers, and all looks well in Device Manager. Then installed remaining hardware drives: floppy, Zip, and DVD, and modem. Everything works except any USB hardware. When I plug in my printer (Samsung ML 1430) or camera to a USB port, the computer does not recognize any new hardware. I installed the printer software, but no communication between printer and computer. I have gone through this process twice, and same result. HELP!!!!