!!
critical HP
Error Code Red LED blinks 9 times every second followed by a 2 seconds pause
System powers on but is unable to boot.
? What Causes This
Misconfiguration or corrupted operating system files on the drive.
✓ How to Fix It
- Try entering BIOS setup and verifying boot option ROM configuration.
- Use a recovery solution if accessible, otherwise reinstall OS from scratch.
Source: page 2 of the official manual
From the manual
This error code appears in:
HP Compaq Elite 8300 Small Form Factor PC