Trying to install RCA DCM305 Cable Modem to my USB on FIC 503+. To use the RCA disk you must have plug and play. Could not installed. Checked PNP/PCI Conf in the BIOs and it shows: PNP OS installed: NO. I changed it the Yes and rebooted. Just before loading the desktop icons, the pc crashed. I tried again, same results. I changed the PNP OS back to Yes and it booted fine. I have tried this many times with no success. It appears that all entries on the PNP/PCI Conf page are the default ones. Except for the IRQ Sequence. Would someone please tell me what I can change to enable the PNP feature? Thanks so much, Toots