Welcome James Anderson,
If your monitor cycles through multiple inputs every time the PC starts, the behavior is usually controlled by the monitor's input detection feature, not by Windows. Windows can send video to the connected display, but it cannot instruct the monitor which physical input (HDMI, DisplayPort, DVI, etc.) to check first during startup.
Please try the steps below to troubleshoot the issue:
Step 1: Set a fixed input source on the monitor
- Press the monitor's Menu button.
- Navigate to Input Source, Input Select, or a similarly named menu.
- Select the port your PC is connected to (for example HDMI 2).
- Save the setting and exit the menu.
- Restart the PC and monitor.
Step 2: Disable Auto Input Detection
- Open the monitor's on-screen menu.
- Look for Auto Source, Input Auto Scan, or Auto Detect.
- If available, set it to Off.
- Manually select the correct input.
- Save the changes.
Step 3: Verify the cable and port
- Ensure the display cable is firmly connected at both ends.
- If the monitor has multiple HDMI ports, connect the cable to the port you intend to use permanently.
- Avoid adapters or docking devices temporarily to test whether they affect input detection. Microsoft recommends checking cable and hardware connections when troubleshooting display issues. Troubleshoot external monitor connections in Windows | Microsoft Support
Step 4: Check Windows display detection
- Press Windows + P.
- Select Extend (or Second screen only if preferred).
- Open Settings > System > Display and confirm the monitor is detected properly. Microsoft recommends verifying display configuration when troubleshooting external monitor issues.
I hope this helps. Please let me know the results of the above tests, and I will do my best to assist further.
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