I had this week some pnp bios issue when all of a sudden the plug n play functions stopped working on my pc. I read through several forums and none of the suggestions worked. After i've reinstalled my windows, it worked fine, until today. Now i can't use my usb's pnp feature, and when i checked the device manager, the pnp bios was missing from the system devices list. Any ideas? I'm using XP sp3.