Title: Troubleshooting Ethernet Port Failures on ASRock B450M Pro4 Motherboard: A Comprehensive Guide
In today’s digital age, reliable wired network connections are essential for both work and entertainment. However, hardware issues such as a non-functional Ethernet port can be frustrating and disruptive. This article details an extensive troubleshooting process for resolving Ethernet connectivity problems on an ASRock B450M Pro4 motherboard, highlighting key steps, challenges encountered, and possible solutions.
Understanding the Issue
Scenario Overview:
– Event Trigger: Power outage caused by a lightning storm
– Symptom: Ethernet port ceases to function post-outage
– Observation: Ethernet port lights are inactive; Wi-Fi remains operational
– Hardware: ASRock B450M Pro4 motherboard
Initial Checks and Confirmations
Before diving into complex diagnostics, basic hardware verifications are critical:
– Confirm that the external wall jack is active and functional
– Verify the modem’s operational status
– Test Ethernet cables with known good connections
– Ensure that the USB ports sharing the network interface are functional
Troubleshooting Efforts and Outcomes
1. Device Recognition and Driver Status
– Device Manager Inspection: Realtek PCIe GbE Family Controller was hidden, showing Code 45 (device not connected)
– Physical Inspection: No visible burn marks; ports appear physically intact
2. Driver Management
– Updated network drivers to the latest version
– Attempted to uninstall and reinstall the Realtek device; however, it did not reappear after multiple restarts
– Tried installing drivers via flash drive, encountering the error: “Realtek Network Controller was not found. If Deep Sleep Mode is enabled…”
3. BIOS and UEFI Settings
– Navigated BIOS/UEFI to locate onboard network options; none found under typical menus
– Tried resetting BIOS settings and clearing CMOS by removing the motherboard battery and using shorting pins
4. Additional Checks
– Verified no physical damage or smell indicating hardware failure
– Tested Ethernet port connectivity with different configurations
External Resources Consulted
– Reddit Threads: Discussions about similar issues experienced by others
– Forums: Tom’s Hardware and ASRock support communities
– Additional online resources for motherboard and network troubleshooting
Key Takeaways and Next Steps
Despite exhaustive efforts, the Ethernet port remains unresponsive, with both hardware and software points seemingly checked off. This points strongly toward potential hardware failure. While purchasing a replacement network card (approximately $15) might be
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