I'm sorry if i choose mis-location and mis-time, but very hope to get help....
My HDD is Samsung HD080HJ (80GB). Because of some unknown reasons it was locked by password.
After theoretical knowledge exploring i've stop before that:
Bootable FDD with DOS and MHDD;
HDD with user maximum password (by MHDD opinion);
"t" 32 times is not fit (i suppose master password was changed too);
Other passwords (set by some hdd-soft) are also don't fit.
My questions are:
1. Can i unlock it without special hardware if i don't know any (user/master) passwords?
2. Are the other passwords for my Samsung exists?
3. Who was able to set this password if user was not able to do that? PC was dusty (maybe it was a hardware-brake), and user said some message appeared in internet browser and he click something (maybe it's windows-virus).
4. Can HDDUnlocker repair this from windows? (this is the most "linked" soft in the internet - it's a fake or it's true?).
Thank you very much, sorry for my (maybe) stupid questions and for my (not native) poor english. I have no time to search more information, and actually have no much ideas about where i can found it.. but this is a very very important thing for me (i can be fired if will not fix it). So i hope for advices, links or whatever you can give me

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please help me, humans!!!