Using an IBM PC #350-100 DX4 (Type 6581-WRK \ Mfg date 1995 \ CPU 80486) and installing a Nic whose Mfg. is Cabletron E2000 DN1 (0000) I get a continual error message of > “Network adapter is not working properly.” I’ve resolved several conflicts,changed Jumper-pins on Nic, changed IRQ and I/O values, plus updated to the correct driver(s). Any suggestions?