Re: dosen't show hidden files & folders....
 

Gautam, I need to see that MBAM log, please... [it is saved under Logs tab in Program Files\MBAM].
also:
==download hijackthis: http://www.majorgeeks.com/download5554.html
-copy it to a new FOLDER placed either alongside your program files or on your desktop and then... rename hijackthis.exe to imabunny.exe
-in that folder start HijackThis by dclicking the .exe; now close ALL other applications and any open windows including the explorer window containing HijackThis.
-click the Scan and Save a Logfile button. Post the log here.
Post both logs, please. I am blind without them.
Did you try the Bitdefender online scan? Post that log also... that scan will remove your autorun.inf trojan if that is what you have.