How To Delete "autorun.inf" Virus?

Autorun.inf is the file that tells the USB what do when you plug it into the computer. (like a CD when you put it into your computer). Try having a look at hidden folders and files and stuff. You can try to use microsoft security essentials. I scanned one of my pendrive and it detected the autorun.inf virus from the pendrive and asked me to clean my computer so i clicked it and i think it removed it but if it is quarantined you have to go to the history and removed it from there.Microsoft security essentials detected the autorun.inf virus in my pendrive... but in your friend's hdd maybe it should detect it too... so i guess that you should ask your friend to try to use microsoft security essentials to remove it. One simple tweak you can try: REGEDIT4

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

That simple registry tweak will prevent a similar file from ever triggering again.
Or you can try some software's:

• Malwarebytes: http://www.malwarebytes.org/
• Combofix: http://www.combofix.org/

How To Delete "autorun.inf" Virus?