3Com 3CXFE574BT User Guide - Page 22

18 CHAPTER 4: SETUP FOR WINDOWS NT Card not functioning. Need to force speed and duplex settings. Slow or dropped connection on a 10/100 switch Open Windows NT Diagnostics. From Start menu, select Programs/Admin Tools/Windows NT Diagnostics. Check for resource conflicts and make sure the settings for the LAN card are valid. In most cases, the automatic settings work fine. However, if you need to force speed and duplex settings to match those of an attached device: 1 Open Control Panel/Network. 2 Click on the Adapters tab. 3 Select Link Settings and specify the desired values. The switch may be forced to 10Mbps. Open Control Panel/Network. Click on the Adapters tab, select Properties, and disable Auto Polarity. Uninstalling the Card Sometimes previous or unfinished installations leave problems that affect card operation. If the card installation is unsuccessful for any reason, your best course may be to remove the card and its software and repeat the installation procedures with a fresh installation of the operating system. Possible problems may be indicated if: s The card is not working. s Windows NT is not detecting the card. s The system issues a warning tone at startup. If you are having any of these problems: 1 Remove the LAN card from the card slot. 2 Open Network/Adapters. 3 Select FE574B-3Com 10/100 LAN PCCard-Fast Ethernet and click Remove. 4 Reboot and reinstall the card. This procedure removes the card only. Users who choose to remove all networking components should remember to use the setup procedure described in "Setup With No Networking Installed" on page 15.