to run the Petya Vaccine you MUST

hit download (I would recommend saving it in your downloads folder, should be the default)

(WHILE IN FILE EXPLORER)

Right-click "Petya_Vaccine.bat"

Then hit "Run as Admin"

Click "yes" when promted

the Petya_Vaccine will scan to see if you have the vaccine or not

if you don't have it, it will then ask if you would like to intall the Petya_Vaccine

WARNING THIS MAKES A EDIT TO YOUR C:\WINDOWS FOLDER

then type "y" and hit enter

hit enter again to exit CMD

Keep in mind this is a VACCINE NOT A CURE!