Connect the device directly to the PC to rule out power delivery issues from unpowered external splitters.
The flash drive is physically plugged in and may even light up, but it does not appear as a usable drive letter under "This PC". Usbstor Diskgeneric-usb-flash-disk--7.76
: The driver subsystem stack handling the device (Universal Serial Bus Storage). Connect the device directly to the PC to
: Windows identifies the string as matching USBSTOR\GenDisk . Usbstor Diskgeneric-usb-flash-disk--7.76
For advanced users only: Some generic USB controllers (like Phison, Alcor, or SiliconGo) with firmware version 7.76 are vulnerable to firmware corruption. You need: