!
error HP
Error Code Red LED blinks 10 times every second followed by a 2 seconds pause
Bad option card or expansion board.
? What Causes This
Faulty peripheral expansion cards connected to the motherboard.
✓ How to Fix It
- Remove any recently added expansion slots/cards.
- Reconfigure BIOS setup if necessary and attempt booting again.
Source: page 2 of the official manual
From the manual
This error code appears in:
HP Compaq Elite 8300 Small Form Factor PC