Locked out of Computer by TPM
Posted on 2012-09-04
A laptop i have been using has the system drive encrypted with bitlocker and requires me to enter a tpm pin before bootup. Now this has worked fine for over a year- i occasionally would type in the wrong pin and it would ask me to retry or lately prevent me from entering another pin telling me "Too many incorrect PINs have been entered" and that I will be temporarily locked out to prevent me from guessing the PIN. After an hout or so i would then try again and it worked fine.
About 10 days ago i accidentally misstyped the PIN again but now the lockout doesn't seem to reset its timer. I gave it the usual hour or two and as these periods turned out not to be enough i left the notebook untouched for a week but the lockout is still active.
The error message at the startup ("Too many incorrect PINs have been entered") gives me two options: ENTER=Retry (pointless) or ESC=Recovery which brings up Windows Boot Manager telling me "Windows failed to start" and that i should insert the Windows Installation Disc and click "Repair your Computer", i did this and chose the "Startup Repair" option it wasn't successful.
The Computer is not part of a domain and i have the TPM owner file on a USB disk.
At this point, i am just wondering: is there a way to access my notebook again? Maybe some of you may share some insight.