4-4 C HAPTER 4: T ROUBLESHOOTINGRunning the NIC Self-TestRun the NIC self-test to check the physical components,connectors, and circuitry on the NIC.1 Make sure that the 3C905B-TX NIC is installed andconnected to the network (Chapter 2) and thenetwork driver is installed (Chapter 3).2 Start the 3Com NIC Diagnostics program by clickingthe Windows Start menu.3 Select Programs.4 Select 3Com NIC Utilities.5 Select 3Com NIC Diagnostics.A warning message appears. Click OK to disconnect yourPC from the network to conduct this test.The 3Com NIC Diagnostics General screen appears, asshown in Figure 4-2.Figure 4-2 3Com NIC Diagnostics Program General ScreenTo access the 3Com NIC Diagnostics program later byclicking its icon in the system tray, click the check box nextto Enable Tray Control.