If your usb memory stick does not have a switch then the error indicated the memory chip(s)are faulty
Data recovery is expensive, probably requiring the chips to be un-soldered.
Buy a good quality replacement.
An alternative may be you formatted it in a Mac or Linux system and can't read it in a Windows PC
Though the likely 'error message' would be different.
I recently looked at a collection of USB memory sticks formatted in a Mac which could not be read in the owners Windows PC
Looking at them in another Windows 7 PC and found there were a lot of files with names starting with a . which means hidden file in Unix
Formatting as fat32 in Windows cured the problem.