It seems like I destroyed my truecrypt encrypted OS partition when I accidentally restarted my laptop after having another OS in stand by. Here is exactly what I did:
I was running windows 7 on an unencrypted hard disk in my laptop. Instead of shutting it down I went into stand-by mode. Then I changed my hard disk. The new hard disk also contains a windows 7 OS but is fully truecrypt encrypted. When I started my laptop again from stand-by, the login screen of my old session (from the unencrypted OS) appeared but it crashed quickly when I tried to log in.
I performed a shutdown and wanted to boot my encrypted OS from scratch. I got the truecrypt prompt and could enter my password, but the system hangs right after I enter the correct password.
What could be the issue here and how can I restore my OS? Is it possible that my laptop tried to write to my encrypted hard disk after waking up from the wrong state, killing my truecrypt partition in this process? Looking for a solution that does not require me to reinstall my OS.