Error code

ASUS D6

ASUSD6
POST Code· Shown on the motherboard's 2-digit Debug Display during boot.

What it means

Graphic Card abnormal.

Per pc-seed:ASUS

No console output device.

Per pc-seed:ASUS

How to fix it

  1. Re-install graphics card.
  2. Check for dirt on PCI-E pins.

Not affiliated with ASUS. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.