Remember such drives can fail. Try it in another machine, then replace it if it failed.
In closing, no mention of the OS or machine such as asked for when you post. Try to make good posts.
"Note: If you're asking for technical help, please be sure to include all your system info, including operating system, model number, and any other specifics related to the problem."
Bob
I cannot format my flash drive, when I send files to the flash drive connected to an USB port I am asked if I want to format my removable disc, on a yes reply, I get an answer that windows cannot format this drive.

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