Reset monitor numbering by clearing graphics driver registry entries.

⚠️ Warning: Always backup registry entries before deletion.

Steps

1. Prepare

• Disconnect all monitors except your desired monitor #1

• Works best on desktop computers

2. Backup Registry

1. Press Windows + R, type regedit, press Enter

2. Export these locations (right-click → Export):

   • HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\GraphicsDrivers\Configuration

   • HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\GraphicsDrivers\Connectivity

3. Delete Registry Entries

1. Delete both registry locations above (right-click → Delete)

2. Close Registry Editor

4. Restart

1. Shut down computer completely

2. Boot with only monitor #1 connected

3. Wait for Windows to detect the monitor

5. Reconnect Monitors

1. Connect additional monitors one at a time

2. Each will be numbered sequentially (monitor #2, #3, etc.)

6. Verify

• Check "Display settings" to confirm proper numbering

Recovery

If something goes wrong, restore the exported registry files by double-clicking them.