icons in flash drive turn to code

Do you have a backup image of your PC ?

no backupo image

Sorry, but if it turns out to be the infamous CryptoLocker virus, you may be out of luck.

wat is that virus???

It's a virus that encrypts all your files on your PC and demands a ransom to provide you with an encryption key to decrypt your files.

As your PC is okay and the files are encrypted only on the USB stick chances are very low that you have this virus, and as rindi suggests it could be a bad stick or a corrupted file system. Where did you get this USB stick from (or did you yourself copy files to it)?

Let's know what you find when you find the cause. Thanks.

actually the teacher it belongs to tolde me they plug it in a pc and then they clicked on 'scan and fix' and after that this happened.....

You can see the "FOUND.000" folder. That comes from the chkdsk that ran, and it shows that you have a bad file-system. Also your comment above about "scan and fix" is what started the chkdsk.

So try formatting the drive. The data is gone anyway, and if formatting works you might be able to at least use it again (if that works it would be unlikely a hardware problem). Always make sure you use the "safely remove" option before pulling the stick out of a running system, as this is what usually causes this if it isn't done.

Thanks, rindi for these information (I never knew). :-)

The data may not be gone.

You could try copying a couple of files across to the main computer and renaming them.

Then run Trid http://mark0.net/soft-trid-e.html and see if it can identify the file type so you can name them again with the proper file extension.  Then see if you can open the file and if it displays correctly.  If it does then you can consider copying the rest of the data across.

Thank you slingingshot15