my system begins scrolling when I start up

Question

As soon as I start my system, it begins scrolling and I can't stop it. I changed the batteries on my mouse several times and that is NOT the problem. Help!!!

Answer 1

1

This problem is usually caused by a game controller being connected to the PC, if you have a game controller, disconnect it and restart (not shut down) your PC.

2

If that was not the problem, bring up the on-screen keyboard, do you see any indication of any key like the up arrow, down arrow, Home or End keys being pressed, even though you are not pressing those keys?

3

Open Command Prompt, then paste in this command and press Enter:

msdt.exe -id KeyboardDiagnostic

Run that Keyboard Troubleshooter to see if that can solve the problem.

.

If that does not resolve this for you

Open Device Manager

Expand the Keyboards section

Right click your keyboard and choose 'Uninstall'

Then restart your PC

Answer 2

Try isolating whether the issue is caused by the mouse hardware, its connection, or Windows input settings.

1. Check mouse and connection

• If using a USB mouse, unplug it completely and restart Windows. If the scrolling stops when the mouse is disconnected, the mouse or its connection is likely the cause.
• Try a different USB port directly on the PC (avoid USB hubs).
• If using a wireless mouse with a USB receiver, unplug the receiver for 10 seconds and plug it back in to re-establish the connection.
• If using Bluetooth, follow the Bluetooth troubleshooting steps in Fix Bluetooth problems in Windows.

2. Check for stuck input or sensor issues

• Inspect the mouse wheel and buttons for dirt or anything physically stuck that might be sending continuous scroll input.
• If it is a wireless mouse, confirm the batteries are fresh and correctly inserted; weak or poor-contact batteries can cause erratic behavior.
• Test the mouse on a different surface. Avoid glossy, reflective, or problematic colors (such as red-based colors, flat black, dark blue, cyan, or white with blue lines), which can interfere with tracking on some devices.

3. Adjust mouse scroll settings in Windows

• Go to Start > Settings > Devices > Mouse.
• Check the scroll settings (number of lines, scroll direction, and which window is scrolled). Reset them to defaults or adjust to see if behavior changes.
• If using a Microsoft mouse, install and use the Microsoft Mouse and Keyboard Center to further customize and test the mouse behavior. See Mouse and Keyboard Center download.

4. Test with another mouse or keyboard

• Temporarily connect a different mouse. If the problem disappears, the original mouse is likely faulty.
• Also check the keyboard for stuck keys such as Page Up, Page Down, or arrow keys, which can also cause continuous scrolling.

If the system still scrolls even with the mouse disconnected and a different keyboard attached, the issue is likely with Windows or another input device, and further OS-level troubleshooting (such as checking for third-party input software or performing a repair/reset) would be needed.

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References:

• Mouse and keyboard problems in Windows
• Troubleshoot problems with your Surface mouse or keyboard
• Your wireless mouse or keyboard does not respond or you receive a “The wireless <device name> signal quality is low” error message