1. Scan it with your antivirus.
2. Run this.
Panda USB and AutoRun VaccineInsert your flash drive before we begin.
Hold down the Shift key when inserting the flash drive until Windows detects it to bypass the autorun feature. This will keep the autorun.inf from executing automatically.
Download
Panda USB and AutoRun Vaccine and save it to your desktop. -
Alternate download link* Extract (unzip) the file to your desktop and a folder named
USBVaccine will be created.
* Open that folder and double-click on
USBVaccine.exe to start the program.
* Click
Run* Click the button to
Vaccinate computer.* Insert your USB flash drive.
* When the name of the drive appears in the dialog box, click the button to
Vaccinate USB drive(s).
* Exit Panda USB and AutoRun Vaccine when done.
Note: Computer AutoRun Vaccination will prevent any AutoRun file from running, regardless of whether the removable device is infected or not. USB Vaccination disables the autorun file so it cannot be read, modified or replaced by malicious code. The
Panda Resarch Blog advises that once USB drives have been vaccinated, they cannot be reversed except with a format. If you do this, be sure to back up your data files first or they will be lost during the formatting process.
3. Update Windows with Windows Update.
http://update.microsoft.com