I take it you are wanting to try the manual factory reset procedure? Did the LED do anything while you trying to trigger a reset?
- Charge your ereader for a couple of hours -- you can leave it plugged in after the charging time.
- Press and hold the power button for 15-20 seconds to force your Clara HD to power off.
- If you unplugged your ereader in step 1, plug your Clara HD into a power source (your computer or an USB charger)
- Press and hold the power button for up to 30 seconds.
- Once you see the restoring screen, you can release the power button.