Dear all

Clarifications

Computer make and model.
Operating system.

Is this USB drive a new one?
Does it have any files on it already?
Have you tried using another USB port / another computer to check it?

If you have an old computer (before year 2000) that has Windows 98 operating system, your USB flash drive is effectively unusable. Those computers relied upon floppy disks to transfer data.

If your computer recognizes the USB flash drive, you will see a drive letter assigned to it in Explorer mode: right click the Start button, then select Open All Users.

You can try to search for a driver for the flash drive. Insert the drive, then:

Control Panel > Add Hardware

If the wizard spots the device, you will have the option to search the Internet for an appropriate driver. Sometimes this works - it's worth a try.

Rick/Portland, OR

Is the drive formatted? Partitioned?
Use the utility that came with it.
Or:
Go into Control Panel-Computer Management
Disc Manager and click on Disk Drives/
Do you see it listed there as a physical USB drive?
If you see it itemised as Disk 1 Removable R/click on the name then look in the options to initialize it.
That should allow you to format it and assign a drive letter to it.
Choose a letter that is not presently used such as D:\ E:\ if you have 2 rom drives don't use them.
Good Luck

if there is an autorun.inf file on the USB drive. If there is and you don't need it delete it.