Lenovo T440 strange BIOS lock

[vidua]

Hi everybody,

i have a Lenovo Thinkpad T440 (VIVLO NM-A102 main board) with a strange BIOS lock.
It looks like a HD3P (hard drive 3 password) with User+Master password set, except for the "3" where "1" is normal.
But there is no third hard drive at all, there is not even a bay for a second one on this model and this prompt appears even with no hard drive installed at all.
After bypassing the finger print input when booting, the following prompt appears:

First attachement HD3P: without pressing «F1»
Second attachement MasterHD3P: after pressing «F1»

There is no information in the Lenovo Hardware Maintenance Manual.

Did anybody here see this before and do you know what kind of lock this is and how to remove it?

[vidua]

Re: Lenovo T440 strange BIOS lock

My ideas up to now what HD3P could be:

1) the SIM card for the WWAN which i forgot to remove because i did not expect one to be there (??? have to check again) with User PWD = PIN and Master PWD = PUK (crazy idea...)

2) the hard drive in a docking station (were there ever docking stations with integrated drives for this model made by Lenovo? I don't think so)
(But why then does the PWD persist if the disk is removed?)

3) Some SD card which is not inserted but a faulty switch in the slot indicates to the laptop that one is there and this card is treated as hard drive 3 (??? unlikely but i have to check....)

4) somebody entered indeed a HD password for HDD2 (there are HDD0, HDD1 and HDD2 listed in the BIOS though only one can be installed). If this was possible then it is a serious flaw made by Lenovo

5) the BIOS is just corrupted just like lenovo_autopatcher said:

$ bash autopatch.sh T440origBIOS
Using UEFIReplace to inject DXE drivers...
T440origBIOS is corrupted or does not contain a correct dump.
There was an error... Aborting.

Note: there is no general corruption as i can read out the BIOS version GRRM05WW 9.5.15.1730 at address 0F00h with a hex editor as i understand:

0000 0F00 GRRM05WWÿ9.5.15.1730ÿ8MBÿSIGNEDÿ

In this case: (i'm a little bit scared...) is there a known risk to brick the laptop (render it unusable) by installing for example the patched BIOS from Maxpower3 ?

https://www.badcaps.net/forum/showth...highlight=T440
Unlock T440 patched.rar


Please comment, thank you