Be careful while connecting a pen drive to your system !

It is easy to spread virus through pendrive ,
Precautions .
Press shift key when u connect pendive to your system. This will kill the autorun action.
Then open mycomputer and rightclick on the drive icon and select explore.
copy or paste the content and remove it
And there are other ways:

1) disable autorun globally,
2) use other than windows, operating system.