I installed Ubuntu 14.04 and accidentally deleted all partitions. I then used testdisk to retrieve one of the partitions, and after it finished it needed a reboot. I rebooted and now I can't unlock the disk. In the initial screen with the Ubuntu logo and "Enter passphrase:" I enter the password which I'm 100% sure it's correct and it says "cryptsetup: cryptsetup failed, bad password or options?" I pressed ESC and got a black screen that says "requested offset is beyond real size of device /dev/disk/by-uuid/22d81ad4-83d8-492c-9514-09015088a3cf."
I started Ubuntu from the bootable USB, chose to try without installation, and I found that one of the partitions is back and there's a lock 250 MB partition that won't unlock although I only used one password and I'm sure it's correct.
How can I unlock the pc? I'm using an HP ProBook 450.