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ThinkPad Toolbox

A small tray utility for ThinkPad laptops. Control the status LEDs, CPU fan, and keyboard backlight, and keep an eye on CPU temperature, fan speed, and battery, all in one place.

C# / WinForms · .NET 8 · Self-contained · MIT licensed
ThinkPad Toolbox window

What it does

💡 Status LEDs

Turn the power, red dot, microphone-mute, and sleep (moon) LEDs on, off, or into their blink state.

🌀 CPU fan

Switch the fan between firmware Auto and Full speed for a quick cooling boost.

⌨️ Keyboard backlight

Set Off, Low, or High. Optionally remember the level across sleep and restart, and dim it when apps go full screen.

🌡️ Live status

See the CPU temperature (color coded) and current fan RPM at a glance, right in the window.

🔋 Battery info

Charge level and state, plus battery health and cycle count where the hardware reports them.

🛡️ Works on modern Windows

Uses the signed PawnIO driver so it runs on Windows 11 with Memory Integrity enabled. WinRing0 is the default on other systems.