External can't reformat even after partition.

Hello .. So this morning , I moved my laptop from my bed to the floor . I forgot to hold on to my external so it fell down with a loud PAP sound . Windows suggested I reformat it at that exact moment but I freaked out and plug out the usb . I replug it and it's installed , exist in disk management but didn't appear at My Computer . I tried partition it , changing the disk name and stuff and tried to reformat it after uninstall and restart my laptop . But windows can't recognize my external to reformat it . I went to workshop and they said it's broken ? I just bought it two weeks ago and a lot of my important work folders got deleted because of this . I am not ready to buy a new one . Please help ? :(