!!
critical HP
Error Code Power LED blinks red, 8 blinks with a pause
System ROM checksum failure detected, invalid ROM detected.
? What Causes This
Problematic system board or corrupted BIOS.
✓ How to Fix It
Reflash valid BIOS and verify firmware integrity. System may require board replacement if issue continues.
Source: page 2 of the official manual
From the manual
This error code appears in:
HP Prodesk 600 G1 Small Form Factor PC