headset won't turn on

I have two quest pro, and they all face the same problem from time to time, and today, at the same time.

After the meta logo, the visual has never go to see through or anything, just stayed black. I have tried:

1. put it back to charging station and wait for a couple time

2. Rebooted

3. Factory reset, at time it works but today not even this could work.

Anyone has similar problem? please help!