Hello!
Aha, well, then the simplest thing to do (if you have files to lose), it is following:
1 - As your Pendrive infected (virus ‘AutoRun Recycler’), you have to check before that PCs in the plugs, have an updated Antivirus functioning, and are not infected.
2 - If you can not do this check, do not use any more Pendrive, and gift it to you.
3 - If you can do the testing, see, then plugging that you get any Poster Antivirus and alerting the problem is solved.
4 - Then go to the Start menu and open the ‘My Computer’ folder.
5 - Here you will see a series of icons of disks, and you choose one that will tell ‘Disco external’ 8GB or ‘Removable Disk’ 8GB, etc.
6 - Then click on it with the right mouse button, and the menu comes out, you press the button Left on ‘Format’.
    Attention: Make sure it’s your Pendrive 8GB .
7 - You will get a new menu where you choose ‘Quick Format’, and wait a moment.
8 - Finally , you can ‘Open’ your USB flash drive, and you will see that it is ‘clean’.
9 - And so you can use perfectly and no need to install anything to use it.
10 - Y ‘Colorin Colorado’, este cuento ha terminado…
Regards, Alfred. (translated by Google)