Some friend of mine pull a prank on me. He changed the administrative password and too away all the admin rights from me. i even dont knwo who did it as i am living in a hostel. Furthermore, someone also put a password on BIOS and disabled bootable option so i cant install a new window. Whatever software or tool i used i get access denied ai cant boot from a CD or floppy. I have a Intel 915GAv motherboard. Its BIOS is locked. I cant open the CPU since under warranty and if i open it i will lose warranty. Also, the shopkeeper knows nothing about it. Can some one help.