I’ve run into an issue with my HP 800 G1 Small Form Factor PC after performing a BIOS rewrite. Everything works except for one major problem — the MAC address for the onboard network adapter is missing.
Here’s the situation:
- Model: HP 800 G1 SFF
- OS: Windows 10 Pro
- Cause: After rewriting the BIOS, the system lost its original MAC address.
- Symptoms:
- Network adapter shows a generic or invalid MAC (or sometimes blank).
- No Ethernet connectivity unless I use an external USB-to-Ethernet adapter.
- What I’ve tried:
- Checked BIOS settings (no MAC override