Peripheral detection failure (USB/Thunderbolt)
4.5
Plugging in a device results in "USB Device Not Recognized" or no response at all.
Symptoms
- "USB Device Not Recognized"
- No sound when plugging in
- Power only, no data
Possible Causes
- Faulty cable
- Dirty port
- Missing controller drivers
Step-by-Step Fix
1
Try Different Cable
Many cables are "charge only" and lack the data wires.
2
Clean the Port
Use a toothpick to gently remove lint from the USB-C or Lightning port.
3
Reinstall USB Controllers
Uninstall all "Root Hubs" in Device Manager and restart.
When to See a Technician
Thunderbolt devices often require "Approval" in the Thunderbolt software before they will work.
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