|I was really just basing my response after a quick google search of 'HDD frozen password'. A lot of sites talked about resetting CMOS so I figured it was worth a shot. His wording kinda makes it seem like it could be either BIOS or HDD.|
After reading a few more articles, it still seems to me like the 'Frozen Password' has something to do with BIOS, not the HDD.
When I said 'reset cmos' I didn't mean necessarily just taking out the battery, I was more so talking about reseting BIOS using the reset jumpers on the motherboard.
If it is a BIOS password, then you should be able to put the drive in another computer and access it fine. If this doesn't work, then THX is right, something is saved to the drive itself. At that point your only option would be to wipe the drive, although BIOS or whatever might not let you if you don't enter the password.
There might be a setting in BIOS that disables 'Frozen Password'. As far as I can tell, it really isn't an actual password, it just means the drive is locked, so you can access BIOS or the Boot Menu easier (as stated above).