I tried to find this topic but could get an answer so I am posting it here.
this man has brought a laptop it's Lenovo ThinkPad with Windows 7. He has lost windows password. I tried to get in to BIOS but it is also locked with password and he does't know it. I tried to get in to Windows Error Recovery mode but he has Bitlocker installed and he doesn't know the key. I mean he is locked out of the system from every aspect. Is there anything one can do about it? He doesn't have any recovery disk.