I have an old 2.5" IDE hard drive taking off Acer Ferrari 4000. I set a password for the hard-drive in BIOS. Laptop broke now I have only the hard drive - I remember the password.
Yet, I tried putting the hard-drive to another laptop (Thinkpad A21m) but it didn't recognize the hard-drive and complained about "no hard drive found". I also asked in a computer repair shop and the technician told me he would try to reset the password in his old laptop (acer or asus) but it didn't recognize the hard drive either.
I have a usb box for the hard drive so when I remove the password I'm OK to go.
Any ideas what to try next? I was thinking about buying an old acer laptop and after getting my data donating the laptop to oxfam though I'd prefer more straight forward solution.
Edit: As far as i can remember it said "no hard drive found" - big red message ove the whole screen.
or it will not work until you send it the password in a way it expects it. (E.g. using a similar laptop)
Yes, that's exactly what i think the problem is (it could be defect as well :-( ). And yes, I am afraid Acer support won't be very helpful.
(I can not add comments, so answering by adding a new answer)
I was also thinking about getting 2.5" IDE to 3.5" IDE adaptor and testing in a desktop but given the above Acer is probably using their own non-standard way to un/lock the hard drive :-(