PC Turns after when I press my Mouse/Keyboard even if I pressed the SHUT DOWN option

Understanding and Troubleshooting Unexpected PC Wake-Ups After Shutdown on Windows 10 and 11

If you’ve recently noticed that your desktop PC turns back on after shutting down, especially when you press keys on your keyboard or move your mouse, you’re not alone. This behavior can be perplexing and might seem unusual, but it’s a known issue with several potential causes. In this article, we’ll explore why this occurs and provide guidance on how to resolve it.

The Issue at a Glance

Many users have reported that after shutting down their Windows 10 or Windows 11 PCs—whether via the Start menu, Alt+F4, or other methods—the system unexpectedly powers back on moments later upon detecting input from peripherals like the keyboard or mouse. This restart happens despite all applications closing normally, leaving users wondering whether this is normal behavior or an indication of a deeper problem.

Clarifying the Behavior

It’s important to understand that many modern motherboards and BIOS/UEFI configurations include features that enable wake-on-input functions. These features allow the computer to wake from shutdown (or sleep) in response to specific inputs, which is useful for remote access or scheduled tasks but can be inconvenient if unintentional.

Possible Causes

1. Wake-on-Keyboard or Wake-on-Mouse Settings

Many systems have BIOS/UEFI options that enable wake-on-input events. If these are active, your PC may turn back on when it detects activity from peripherals.

1. Power Management Settings in Windows

Certain Windows settings control whether devices can wake the system. These are adjustable through Device Manager, allowing you to disable wake-up capabilities.

1. Fast Startup Feature

Windows’ Fast Startup feature can sometimes cause unexpected behavior with power states, including restarts or waking behaviors.

1. Hardware or Peripheral Issues

Faulty or incompatible peripherals may send signals that wake the system unexpectedly.

1. BIOS/UEFI Firmware

Outdated firmware can lead to power management conflicts or bugs that cause unintended wake-up events.

How to Troubleshoot and Fix the Issue

1. Disable Wake-Up Features in BIOS/UEFI

2. Restart your PC and enter BIOS/UEFI setup (usually by pressing Del, F2, F10, or Esc during startup).

3. Look for options related to power management, such as:

   • “Wake on Keyboard”

   • “Wake on Mouse”

   • “Power On By PCI/USB”