If the power adapter or charging cable of Apollo has a problem, or there is a software issue, the projector might be unable to power on.I

To resolve this issue, please try the following steps:

• Press the "power" button on the Apollo for 8 seconds to reset.
• Make sure the power adapter is working well. If the power adapter works without issues, the Nebula Apollo's LED indicator will light up once it is plugged in.