one mouse button does not register or works only intermittently
This symptom concerns the mouse path. Start with a neutral DeviceOK test where available so the next step is based on evidence rather than a generic reset sequence.
Do not jump to the most invasive fix
Avoid destructive resets, unofficial driver packages, firmware flashing, or replacing hardware before the simpler detection, permission, connection and configuration checks are exhausted.
Retest the same condition
After every meaningful change, repeat the same test under the same conditions and compare the result.
Rule out the simple causes
- 1
Run DeviceOK Mouse Button Test and press the affected button repeatedly.
- 2
Check whether the same button works in another app or on another computer.
- 3
For wireless mice, check battery and receiver/Bluetooth connection.
Work through the problem in order
- 1
If DeviceOK sees the button consistently, inspect the affected app/game binding or vendor profile.
- 2
If the button fails across apps, compare another connection/host and review the manufacturer's hardware support.
- 3
Do not assume a driver problem when only one physical button fails everywhere.
A clean browser button event means the OS/browser input path can see the control.
A repeatable failure across DeviceOK and another host/app is stronger evidence of a connection or physical-button problem.