---
title: Technical Support | Help Center
description: Troubleshoot hardware, software, and connectivity issues. Find fixes for common problems, error messages, and performance concerns to keep your Lü system running smoothly.
---

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1. [Help Center](https://help.play-lu.com/en)
2. [Technical Support](https://help.play-lu.com/en/technical-support)

# Technical Support

 Troubleshoot hardware, software, and connectivity issues. Find fixes for common problems, error messages, and performance concerns to keep your Lü system running smoothly.

## General

- [Lü Won't Power On](https://help.play-lu.com/en/if-your-lu-is-not-turning-on)
- [System reset](https://help.play-lu.com/en/system-reset)
- [About Lü’s Heart Light](https://help.play-lu.com/en/about-l%C3%BC-s-heart-lights)
- [Domains used by Lü](https://help.play-lu.com/en/domains-used-by-l%C3%BC)
- [Free Play, no exit](https://help.play-lu.com/en/stuck-in-free-play-mode)
- [Reset your Lü-Community password](https://help.play-lu.com/en/forgotten-password)
- [How to set up a remote session with Lü Technical Support Team](https://help.play-lu.com/en/how-to-set-up-a-remote-session-with-l%C3%BC)
- [Contact us](https://help.play-lu.com/en/contact-us)
- [How to open the Heart (Lü 2nd generation)](https://help.play-lu.com/en/how-to-open-the-heart-)

See less ▼

## Camera

- [Camera not detected](https://help.play-lu.com/en/camera-not-detected)
- [Manual Camera Calibration](https://help.play-lu.com/en/manual-camera-calibration)
- [How to calibrate the camera](https://help.play-lu.com/en/how-to-calibrate-the-camera)
- [Cleaning the camera](https://help.play-lu.com/en/en/nettoyage-de-la-lentille-de-la-cam%C3%A9ra)

## Projection

- [Lü 1st generation - Change the image ratio](https://help.play-lu.com/en/l%C3%BC-1st-generation-change-the-image-ratio)
- [Correcting Image Shape with Quick Corner](https://help.play-lu.com/en/quick-corner)
- [Change the color of the projector image](https://help.play-lu.com/en/change-the-color-of-the-projector-image)
- [Flickering projection](https://help.play-lu.com/en/hdmi-in-eq-level-procedure-9-8-2023)

## Remote

- [Troubleshoot the Lü keyboard-remote](https://help.play-lu.com/en/mon-clavier-t%C3%A9l%C3%A9commande-est-bris%C3%A9-comment-puis-je-m-en-procurer-un-nouveau)
- [Replacing the Keyboard - Remote](https://help.play-lu.com/en/replacing-the-keyboard-remote)

## Lighting System

- [Lighting not initialized](https://help.play-lu.com/en/lighting-not-initialized)

## Sound System

- [How to use the microphone](https://help.play-lu.com/en/en/microphone)
- [No sound](https://help.play-lu.com/en/no-sound)
- [Microphone not working](https://help.play-lu.com/en/microphone-not-working)

## Updates and Security

- [Update issue](https://help.play-lu.com/en/trouble-updating)
- [About Antivirus Softwares](https://help.play-lu.com/en/about-antivirus-softwares)
- [Updates for Lü App, Windows and Dell BIOS](https://help.play-lu.com/en/how-to-update-drivers-and-bios)

## Connectivity

- [Internet connection](https://help.play-lu.com/en/internet-connection)
- [Issues with Düo connection](https://help.play-lu.com/en/issues-with-duo-connection)

## Lü Operating System (OS)

- [Lü Application Not Responding or Has Stopped Working](https://help.play-lu.com/en/l%C3%BC-is-not-responding-or-lu-exe-has-stopped-working)
- [My Lü app is not working properly](https://help.play-lu.com/en/my-l%C3%BC-app-is-not-working-properly)
- [Resolving Display Resolution Issues in the Lü Application](https://help.play-lu.com/en/wrong-resolution)

## Windows (OS)

- [What version of Windows is my Lü running?](https://help.play-lu.com/en/what-version-of-windows-am-i-running)
- [Stuck on Dell Splash Screen](https://help.play-lu.com/en/en/stuck-on-dell-splash-screen)
- [Windows 11 Entreprise IoT LTSC for Lü](https://help.play-lu.com/en/what-is-windows-11-enltsc)
- [Windows 10 LTSC for Lü](https://help.play-lu.com/en/windows-10-ltsc)

- [Getting started with the Lü](https://help.play-lu.com/en/getting-started-with-the-l%C3%BC#main-content)

    - [Start here](https://help.play-lu.com/en/getting-started-with-the-l%C3%BC#start-here)
    - [Account & Setup](https://help.play-lu.com/en/getting-started-with-the-l%C3%BC#account-setup)
    - [Pedagogy and Programming](https://help.play-lu.com/en/getting-started-with-the-l%C3%BC#pedagogy-and-programming)
    - [Hardware basics](https://help.play-lu.com/en/getting-started-with-the-l%C3%BC#hardware-basics)
    - [Installation and Best Practices](https://help.play-lu.com/en/getting-started-with-the-l%C3%BC#installation-and-best-practices)
    - [Tips and tools](https://help.play-lu.com/en/getting-started-with-the-l%C3%BC#tips-and-tools)
- [Technical Support](https://help.play-lu.com/en/technical-support#main-content)

    - [General](https://help.play-lu.com/en/technical-support#general)
    - [Camera](https://help.play-lu.com/en/technical-support#camera)
    - [Projection](https://help.play-lu.com/en/technical-support#projection)
    - [Remote](https://help.play-lu.com/en/technical-support#remote)
    - [Lighting System](https://help.play-lu.com/en/technical-support#lighting-system)
    - [Sound System](https://help.play-lu.com/en/technical-support#sound-system)
    - [Updates and Security](https://help.play-lu.com/en/technical-support#updates-and-security)
    - [Connectivity](https://help.play-lu.com/en/technical-support#connectivity)
    - [Lü Operating System (OS)](https://help.play-lu.com/en/technical-support#lü-operating-system-os)
    - [Windows (OS)](https://help.play-lu.com/en/technical-support#windows-os)
- [Möve](https://help.play-lu.com/en/m%C3%B6ve)

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