For many months now I have this big issue:
at times USB flash drives (different) are not recognized, not readable, not ejectable. And this event also causes the system to not restart or shutdown anymore, networking also fails. USB mouse still works. I have tp force shutdown the system. After this restart the thumbdrives work fine if I plug them very soon after the system is turned on.
The only errors in Event Viewer appear to be connected to the problem, not the cause of it: "A timeout (30000 milliseconds) was reached while waiting for a transaction response from the WSearch" (also same for Avast). In the past I also had "The device (location (unknown)) is offline due to a user-mode driver crash.", but not anymore.
Environment: Asus N750JK, Windows 10 up-to-date, USB 3.0, drivers up-to-date.
What I tried:
delete all USB drivers under Device Manager and restarting for them to be reinstalled;
manual reinstall of USB 3.0 drivers;
formatting the flash drives, and using them in another system (they work fine);
run WinUSB.diagcab (no problems detected);
ran Intel® Driver Update Utility.