Test your mouse, keyboard, and trackpad — free, no install
Every click, keypress, and scroll shows up live, so you can tell a broken device from a driver problem in seconds. Nothing to install, nothing leaves your computer.
Mouse & Trackpad
Buttons, movement, scrolling, and click quality
Keyboard
Dead keys and stuck modifiers
Gaming
Speed and reflexes
Display
Dead pixels, backlight bleed, and color
Fix it
When a test confirms something is actually wrong
Mac trackpad not working
8 fixes for clicking, scrolling, or a completely unresponsive Mac trackpad.
Windows touchpad not working
Driver, BIOS, and settings fixes for Precision and standard touchpads.
Keyboard not working
Quick checks for dead keys, a stuck modifier, or a keyboard the OS won't see.
Mouse not working
Wrong surface, connection, settings, or debris — in order of likelihood.
Mouse double-clicking on one click
Why switches wear out, and what actually fixes it.
One keyboard key not working
Debris, membrane wear, and switch swaps, in order of effort.
Mouse scroll not working
Jumping, stuttering, and scroll that goes the wrong way.
Mouse double-clicking on a single click
Quick fixes: debounce settings, dust, and driver updates.
Mouse scrolling in the wrong direction
Reverse it in Windows settings, or clean a dirty encoder.
Mouse light on but cursor won't move
Sensor, surface, and connection checks for a frozen cursor.
Keyboard typing multiple letters
Key chatter: clean the switch, re-seat it, or filter it in firmware.
WASD swapped with arrow keys
The Fn shortcut that undoes an accidental hardware swap.
Keyboard typing numbers, not letters
Turn off the hidden Num Lock keypad, by laptop brand.
Spacebar stuck or mushy
It is the stabilizer, not the switch. How to clean it safely.
Shift key not working
One Shift or both? That answer decides the whole fix.
Keyboard disconnects randomly
The USB chime every few minutes, and what causes it.
Sticky switch, no soldering
Fix a binding switch with the board still assembled.
Cursor jumping across the screen
Teleporting, stuttering and drifting are three different faults.
Wireless mouse stuttering
Your USB 3.0 ports are probably jamming your own dongle.
Drag and drop keeps dropping
A worn switch releasing for a millisecond mid-drag.
Bluetooth mouse disconnecting
Two power settings, and why changing one never works.