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GarysMatrix Screensaver - Installer Guide

Installation Methods

Method 1: Simple Batch Installer (Recommended - No Dependencies)

  1. Build the screensaver first: powershell .\build.ps1

  2. Run the installer (right-click and select "Run as administrator"): install_screensaver.bat

  3. Follow the on-screen prompts

Method 2: NSIS Installer (Professional Installer)

Requirements: NSIS must be installed first - Download from: https://nsis.sourceforge.io/ - Install to default location: C:\Program Files (x86)\NSIS\

Steps:

  1. Build the screensaver: powershell .\build.ps1

  2. Build the installer: powershell .\build_installer.ps1

  3. Run the generated garysmatrix_installer.exe (right-click and select "Run as administrator")

Method 3: PowerShell Installation (Command Line)

.\install.ps1

(Right-click PowerShell and select "Run as administrator")

Configuring the Screensaver

After installation, configure it in Windows Settings:

Windows 10/11: 1. Right-click on the desktop → Personalize 2. Go to Lock screen (left sidebar) 3. Scroll down and click Screensaver settings 4. Select GarysMatrix from the dropdown 5. Click Settings to customize: - Choose a color profile (green, blue, red, yellow, orange, purple, rainbow, monochrome) - Adjust trail contrast (Low, Medium, High) 6. Set the wait time (idle time before screensaver activates) 7. Click OK to save

Uninstallation

Using Add/Remove Programs:

  1. Go to Settings → Apps → Apps & features
  2. Search for "GarysMatrix Screensaver"
  3. Click on it and select Uninstall
  4. Follow the prompts

Or run the uninstaller directly:

C:\Windows\System32\garysmatrix_uninstall.bat

(Right-click and select "Run as administrator")

What Gets Installed

  • C:\Windows\System32\garysmatrix.scr - The screensaver executable
  • C:\Windows\System32\garysmatrix_uninstall.bat - Uninstaller script
  • Registry entries in HKCU\Software\garysmatrix - User settings

Features

✓ Multi-monitor support (spans all monitors) ✓ 8 color profiles (green, blue, red, yellow, orange, purple, rainbow, monochrome) ✓ Configurable trail contrast (0-100%) ✓ Unicode character set (Katakana) ✓ Live preview in settings ✓ Registry-backed configuration

Command Line Usage

For advanced users, the screensaver supports command-line arguments:

  • garysmatrix.scr /s - Show fullscreen
  • garysmatrix.scr /c - Open configuration dialog
  • garysmatrix.scr /p <hwnd> - Preview mode (used by Windows)

Troubleshooting

Screensaver doesn't appear in list: - Ensure the .scr file is in C:\Windows\System32\ - Check that Windows can execute it (right-click → Properties, check "Unblock" if present) - Try running install_screensaver.bat again

Settings don't apply: - Close and reopen the screensaver settings dialog - Ensure you clicked "OK" to save your changes

Installation fails: - Right-click the installer and select "Run as administrator" - Ensure you have write permissions to C:\Windows\System32\

Support

For issues or feature requests, please refer to the source code repository.

Source: INSTALLER_README.md, updated 2026-01-17