Turning on the computer

Turning on the computer

We strongly recommend that you leave the computer on at all times, i.e. 24 hours a day, 7 days a week.

If you are here, it's probably because you have a blue screen with a HDMI 1 no signal message. Here are the three methods you can use to turn the computer back on :

1. If you have the second generation of Lü, press the space key on your keyboard.

2. Manually press the computer's power button on the computer. A lift will be needed.

3. Turn off the breakers for minimum 15 seconds. When they will be turned back on, the computer will reboot automatically.

Note that it is essential that the projector as well as the computer are turned off before turning off the circuit breakers, as this could damage them. You should only reset the circuit breakers if you have no other possible alternative to resolve your problem or to restart the computer after it was accidentally shut down. We recommend that the electrical circuit(s) dedicated to Lü be clearly identified. If you must turn off the circuit breakers, wait at least 15 seconds before turning them on again.


If necessary, please contact Lü Technical Support at:



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