Disclaimer
Hardware Test Hub publishes free diagnostic tools and troubleshooting guides for input devices. This page explains, plainly, what those results mean, where they stop being reliable, and what you are taking on if you follow a repair step from one of our guides.
The tests measure what your browser sees
Every tool on this site runs inside your browser and reports the events your browser receives: pointer positions, button presses, wheel deltas, gestures, and key events. That is a genuinely useful signal — it is the same input your games and applications receive — but it is not a direct measurement of the hardware itself.
Several layers sit between the physical switch in your device and the event our page reads: device firmware, the USB or Bluetooth link, the operating system's input stack, any vendor driver or remapping utility, and finally the browser. A fault, a setting, or a translation anywhere in that chain shows up in our results looking exactly like a hardware problem. This is why our guides so often ask you to rule out drivers and OS settings before concluding that a device is broken.
Two limits are worth stating outright. Timing figures — click speed, reaction time, and polling-related readings — are affected by your monitor's refresh rate, your browser, and whatever else your computer is doing at that moment, so treat them as approximate rather than exact. And a browser cannot see input a lower layer has already swallowed, so "the test shows nothing" does not by itself prove the device is dead.
A passing test is not a clean bill of health
Intermittent faults are the reason. A mouse switch that double-clicks once an hour, a key that chatters only when the board is warm, or a cable that drops out when it flexes a certain way can all pass a thirty-second test and fail in normal use. If a test looks clean but your problem is real, the test has not disproved the fault — repeat it over a longer session, and under the conditions where the problem usually appears.
Not professional advice
The guides on this site are general information, written for a general audience. They are not a professional repair diagnosis for your specific device, and following them does not create any advisory or professional relationship. For hardware under warranty, for devices with liquid damage, and for anything involving a battery, the manufacturer or a qualified repair technician should be your first stop rather than this site.
Repairs are at your own risk
Some guides describe physical procedures: removing keycaps, cleaning switch contacts with isopropyl alcohol, re-seating hot-swappable switches, opening a mouse shell, or replacing a component. These can go wrong. You can bend a switch pin, snap a keycap stabilizer, damage a ribbon cable, or void your warranty.
If you choose to carry out any of these steps, you do so entirely at your own risk. Before you start: unplug the device, check whether it is still under warranty, and stop if a step requires more force or more confidence than you have. We accept no liability for damage to hardware, loss of data, or costs arising from a repair attempt. This is also set out in our Terms and Conditions.
Accuracy and currency of the guides
We test the steps we publish and revise them when we find something wrong. Even so, operating systems, drivers, and manufacturer utilities change frequently, and a menu path that was correct at the time of writing may have moved in a later update. Where a guide names a specific settings screen, treat the described destination as the goal rather than the exact clicks. If you find a step that no longer matches reality, please tell us — that feedback is how these pages stay accurate.
Third-party products, links, and trademarks
Guides mention manufacturers, models, operating systems, and third-party utilities to describe where a fix applies. We are not affiliated with, endorsed by, or sponsored by any of them, and all trademarks belong to their respective owners. External links are provided for convenience; we do not control those sites and are not responsible for their content or safety. Download drivers and utilities only from the manufacturer's own site.
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Contact
Questions or corrections are welcome through our contact page or at em.sun2019@gmail.com.