Q: I just cant seem to find it!
A: Note If your HP All-in-One is not turning on, you can view the serial number by looking at the top sticker above the rear USB port. The serial number is the 10-character code in the upper left corner of the sticker. 1. Press OK and Copy Menu at the same time. The Info Menu appears. 2. Press until Model Number appears, and then press OK. The service ID appears below the model number. Write down the complete service ID. 3. Press Cancel. 4. Press until Serial Number appears. 5. Press OK. The serial number appears. Write down the complete serial number. 6. Press Cancel twice to exit the Info Menu.