Help & Support

Start with the relevant tool, repeat the check, and change one variable at a time.

Check each button, move the wheel in both directions, and compare pointer movement with what you do physically.

Press keys one at a time, then try the combinations that are causing trouble. Browser and operating-system shortcuts may be intercepted.

Close busy tabs, repeat several times, and compare the pattern rather than treating one value as a hardware specification.

Use the speed and accuracy tools for practice and comparison. Results depend on the device, browser, display, and current system load.

1. Repeat the same action several times and note whether the behavior is consistent.

2. Change one condition: reconnect the device, replace or charge its battery, use another USB port, or close background applications.

3. Repeat in another current browser and, if possible, on another computer.

4. If the issue remains, use the manufacturer's diagnostic or support process. A browser check cannot inspect firmware or internal hardware.

Still need help?

Include the tool URL, browser, operating system, device model, and steps that reproduce the issue.