|Some virus might also be running on it or other link.|
Make a folder called auturun.inf. If it doesn't want to then you may have a hidden file already called that. Read it and see what is says. It should not be there. A folder named that would help prevent infection.
"Best Practices", Event viewer, host file, perfmon, antivirus, anti-spyware, Live CD's, backups, are in my top 10