eRecovery Password

here is one of the answers for obtaining the eRecovery Password.

IN the recovery partion there is a file
\TOOLS\AIMDRS.DAT
which contains the password.

Now you have to get in!
I think a decent partition manager should enable you to browse a partitioon
(partitionmagix, acronis disk director,etc.)
otherwise you have to takethe risk and set D2D on in the BIOS,press Alt-F10
just after BIOS screens and press Ctrl-C when the system boots into the
recovery partition to break out of the autoexec.bat.
After that is just:
TYPE TOOLS/AIMDRS.DAT

Note that this may be slightly different for your model, but the principle will
be the same: there must be a file that stores the password, and since you
changed the pwd it must be one of the few most recent files in the partition.

HTH