i have got a p4 2.0a system with a intel 845gbv mob recently i updated the bios from the intel website and to my suprise the mouse stopped working (connected to ps2) then i connected the mouse to the usb port and its workin now, but my system has been very sluggish after updatin the bios. then one my friend suggested me to reinstall win xp, i formatted and reinstall the pc but the mouse doesn't work in ps2 port. is there any way i can bring back my old mob bios. please help!!!