Create Frequently Asked Questions (FAQ)

This document will be suitable for answering issues that have user-related solutions.

docs/faq.md

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+# Frequently Asked Questions
+
+## 1. My OpenMoHAA client has crashed, leaving the desktop brightened up. How can I fix this without restarting the computer?
+
+### 1.1 Lock and Unlock Your Screen (Windows+L)
+Simply pressing **Win+L** to lock your screen and then logging back in can sometimes reset the brightness to its previous state.
+
+### 1.2. Command Line Fix (Windows)
+If you have an **NVIDIA** or **AMD** GPU, you can try these commands:
+
+- **For NVIDIA GPUs:**
+  Open **Command Prompt (cmd.exe)** or **PowerShell** and run:
+  
+  ```powershell
+  nvidia-settings -a "DPY-0/RedBrightness=0.0" -a "DPY-0/GreenBrightness=0.0" -a "DPY-0/BlueBrightness=0.0"
+  ```
+  
+  (If you have multiple displays, `DPY-0` may need to be replaced with the correct display identifier.)
+
+- **For AMD GPUs:**
+  Open the **AMD Radeon Software** and manually adjust brightness or SDR settings to reset them.
+
+### 1.3. Use a Third-Party Tool to Reset Gamma & Brightness
+Programs like **Gamma Panel** or **f.lux** can help restore modified brightness and gamma settings quickly.
+
+### 1.4. Restart the Graphics Driver (Windows)
+Press **Win + Ctrl + Shift + B** to restart the graphics driver without rebooting your PC. Your screen will briefly go black, then reset.
+
+### 1.5. Reset Gamma via Xrandr (Linux, Xorg Users)
+If you’re using Linux with Xorg, try this command to reset gamma settings:
+
+```bash
+xrandr --output eDP-1 --gamma 1:1:1
+```
+
+(Replace `eDP-1` with the correct display name, which you can find by running `xrandr` in the terminal.)
+
+### 1.6. Changing Display Mode in Windows (Alternative)
+If none of the above solutions work, you can manually reset brightness by changing the display mode:
+1. Right-click on your desktop and select **Display settings**.
+2. Scroll down to **Display resolution** and change it to a different setting.
+3. Revert it back to your original resolution.
+
+This forces Windows to refresh display settings, which may restore brightness.