How to Troubleshoot Broadcom Network Adapters
- 1). Click the "Start" button located in the lower-left corner of the Windows 7 desktop, click the Search box and enter "cmd." Then right-click on the command line icon that appears in the upper-left pane and click "Run as Administrator" in the menu that appears. The command prompt window will display.
- 2). Type "ipconfig /all" and press the "Enter" key. If the Broadcom adapter is listed with IP addresses, note the IP address and gateway address. If the command line output does not list an IP address or gateway address for the Broadcom adapter, type "ping 127.0.0.1" and press the "Enter" key. If four replies are not received, proceed to the next step. If four replies are received, type "ipconfig /release" and press the "Enter" key. Type "ipconfig /renew," press "Enter" and the network connectivity should be restored.
- 3). Click "Start" and type "ncpa.cpl" in the Search box. Press "Enter." If the Broadcom network adapter icon is not displayed in the Network Connections window, go to the Search box, type "devicemgmt.msc" and press "Enter." Click to expand the Network Adapters heading in the Device Management window. If the Broadcom adapter is in the device list, right-click on the Broadcom network adapter and click "Uninstall" in the menu that appears. Then reboot the computer and allow Windows 7 to automatically reinstall the network drivers. Open the Network Connections window and verify that the Broadcom adapter is now displayed. If network connectivity is not restored, proceed to the next step.
- 4). Enter "netsh int ip reset c:\resetlog.txt" at the command prompt and press "Enter." Reboot the computer. Open the command prompt, enter "ipconfig /all" and press "Enter." Confirm that the network adapter now has an IP address, subnet mask, gateway IP address and DNS IP address. Type "ping 1.2.3.4" and press "Enter," replacing the "1.2.3.4" with the IP address of the gateway listed in the command line output. Confirm that four replies have been received. The network adapter is now ready for use.
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