56 C HAPTER 9: D IAGNOSTICS AND T ROUBLESHOOTINGWindows NT 5.0 SupportAt the time of this release of the LAN+Modem card,Windows NT 5.0 was not available and is not currentlysupported.As Windows NT 5.0 becomes available, check the 3ComWorld Wide Web site at http://www.3com.com forinformation on using the LAN+Modem card underWindows NT 5.0. You can also find updates for Windows98 support on the 3Com Support BBS at 1-408-980-8204.Windows 3.1x TroubleshootingMessage or Symptom SolutionConflict with modemconfigurationn Reinsert and reconfigure the modem.n Try one of these common configurations:COM Port IRQ Serial Port AddressCOM1 4 3F8COM2 3 2F8COM3 4 3E8COM3 5 3E8COM4 3 2E8Could not find a PC Card toinstalln Verify that the card is installed correctly.n Try another slot.Cannot configure the modem n Either the IRQ, I/O port, or memory address isnot available.Your computer accesses adifferent port each time you do asoft reboot, so the modem isoften not foundn Add the following statement to yourCONFIG.SYS file before the C&SS driverstatementsdevice=c:\mhz\clrcom.exe nwhere n is the COM port assigned to themodem. If this file is not in your C:\MHZdirectory, copy it from Installation Disk 1.The modem side of theLAN+Modem card won’t workusing the NDIS3 install.n NDIS3 install is not supported for Windowsfor Workgroups with your LAN+Modem card(Windows for Workgroups). Use NDIS2.