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critical HP

Error Code Red LED 8 blinks every second followed by a 2 second pause

Invalid ROM detected, potentially due to incorrect checksum or corruption.

? What Causes This

Faulty firmware or software installation problems that interfere with system boot sequence.

✓ How to Fix It

  1. Clear CMOS settings by removing and re-seating the CMOS battery.
  2. Reconfigure BIOS/UEFI settings.
  3. Contact support for further guidance should issues persist beyond initial troubleshooting steps.

Source: page 4 of the official manual

From the manual

Manual page 4 — HP error Red LED 8 blinks every second followed by a 2 second pause

This error code appears in:

HP Elitedesk 800 G1 Small Form Factor PC