Hey there abubatoure.
I guess you mean GB instead of TB. Try the flash drive with another computer or device to see if the same thing happens. Try reformatting it with another computer. Some manufacturers also offer formatting tools for their USB flash drives and memory cards so you can try that as well.
You could also try if the flash drive acts the same in different USB ports - 2.0 and 3.0
Unfortunately there's always the chance that the flash drive might be failing if nothing works for you. :(
Please let me know how everything goes.