Windows 10/117 min readReviewed 2026-07-29

Mouse intermittently says USB device not recognized

Use reciprocal testing to separate mouse cable failure from a USB port or controller fault.

Quick diagnosis

The component followed by the failure across a two-mouse/two-port matrix is the correct repair target.

An intermittent cable, connector, port, hub, or USB controller can break enumeration.
A connection, driver, or configuration boundary affecting the mouse.
Hardware failure only if the symptom follows the same mouse across controlled comparisons.

1
Create a repeatable baseline
Reproduce the symptom in a simple Windows surface and record exactly when it occurs: The mouse stops and Windows reports USB device not recognized.
2
Run the discriminating test
Test the affected mouse on another PC and a known-good mouse in the same direct port.
3
Apply the narrow fix
Replace the cable or mouse if the fault follows it; otherwise use a stable port and install the PC maker’s chipset/USB driver.
4
Repeat the original comparison
Keep every unrelated setting fixed and repeat the baseline for longer than the normal failure interval.

Replace the cable or mouse if the fault follows it; otherwise use a stable port and install the PC maker’s chipset/USB driver.

Complete repeated reconnects and a sustained movement test without an enumeration error.
Restart or reconnect once and repeat the same controlled test.
Confirm the change did not create a new failure in the comparison state.

• Restore the recorded mouse settings, connection, driver, or mode if the result is not repeatable.

• If the symptom follows the mouse across another PC or source after the documented checks, use manufacturer support or warranty service.

A one-variable comparison shows whether the proposed mechanism actually controls the symptom and preserves a safe rollback.

Mouse and keyboard problems in Windows
Microsoft Support. An intermittent cable, connector, port, hub, or USB controller can break enumeration.

Diagnose it in this order

Reproduce the symptom in a simple Windows surface and record exactly when it occurs: The mouse stops and Windows reports USB device not recognized.

Test the affected mouse on another PC and a known-good mouse in the same direct port.

Replace the cable or mouse if the fault follows it; otherwise use a stable port and install the PC maker’s chipset/USB driver.

Keep every unrelated setting fixed and repeat the baseline for longer than the normal failure interval.