Is your flash disk show only link, when opening in windows operating system? If yes, then it is likely your flash drive infected with a virus. If you dual boot with archlinux or another linux distribution. It's easy to remove virus from flash disk.
It will be like this, if opened from linux, theres strange file, just delete it.
There is folder without name, your data it's on there, backup that.. :D, here's my file that hidden by virus.
You will see some strange name file, remove that,
Usually that file of virus stay at C:\Users\Yourusername\AppData\Roaming, find the strange file on there then delete it.. :D
If the viruses hidden on another file just try to hunt it.. :D