Each time tech tells me he cannot find my request.Īfter a while, read 2 hours, told they need to talk to supervisor, will call me back, KISS OF DEATH, never hear from them. Load the Microsoft-provided in-box driver ( Usbser.sys) for your communications and CDC control device. The file can be located in the C:Windowssystem32. Units work find on my laptop.Ĭalled HP 4 times, after extensive troubleshooting each time, following their instructions, go to hp.com/go/instant, get screen saying request has been received. The program deals with the detection of the USB storage device inserted in the Personal Computer (PC). On reboot, still cannot use flash drives, SD cards, external HDs. Used the HP Recovery Manager to restore factory setting for USBStor.sys, it indicates it is successful but no change Search show diver where it should be: C:\Windows\System32\drivers\usbstor.sys (also usbfilter.sys). ![]() " Windows cannot verify the digital signature for the drivers required for this device." USB Mass storage device properties message
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