I want to install a US Robotics internal Modem (Sportster 33600 Fax PC Plug and Play). My operating system is Windows'95, and my PC is a Pentium-S, in this PC is connected an scanner HP ScanJet 4S plug in the COM2 external port. Previously to insert the modem, i take off all the shunts off of the COM and IRQ jumpers, to do a Plug and Play installation. Where is the problem?? When i insert the internal modem into the computer (in a ISA expansion slot), the scanner doesn't works. There are NOT conflicts in the IRQ's, i locate the problem in the memory I/O adress, because when i plug the modem, the original setting in BIOS (03F8) changes to (02F8), and in windows, my COM2 changes to COM4 (with the new values of memory I/O). When i try to modify this values in the control panel and create a new COM port for the modem or scanner, the answer is the same: my scanner don't works. I think this is a problem from hardware and/or BIOS. Can you help me?
Thank's so much.