How to Disabled Autorun

 Removable USB/thumb drives use the Autorun feature to load files when the drives are plugged into the USB port. Malware exploits the Autorun feature to spread from thumb drive to PC. Disable the autorun feature to prevent malware from spreading.
1.The easiest and most effective means to truly disable autorun can be done via this simple autorun registry hack:

REGEDIT4
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\IniFileMapping\Autorun.inf]
@="@SYS:DoesNotExist"

To use this method, Open Notepad and copy/paste the following into a text file:

REGEDIT4
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\IniFileMapping\Autorun.inf]
@="@SYS:DoesNotExist"

2.Save the file as something.reg. (You have to be sure to change the "Save File as Type" to "All Files" before saving, or Windows will try to save it as a .txt even if you typed in .reg.

Locate the file you just saved and double-click the file to run it. You will receive a prompt asking if you want to add the data to the registry. Click yes to allow the modification.