Hello isewal,
Try this:
1. Connect this Flash Drive to a different port in your computer and see if it works.
2. Connect this Flash Drive to another computer and see if it works.
3. Does this drive show in your BIOS
4. Does this drive show in Computer Management (Right Click on Computer >> Manage >> Disk Management) - if it is detected here, it must have a drive letter assigned to it (like D: or E: etc.). If there is not drive letter, you need to assign one.
Please try this and post the outcome here and we would go from there.
Hope something works out - Good luck and Happy New Year!!