Hi Mikael,
Can you give us a little more information to work with please?

When you are logging into Flight Logger, are you connected to the Internet?
Did you reinstall Flight Logger on your new hard drive or have you copied all your files across ?
What Operating system are you using and what are your system specs?
What version of Flight Logger have you got and have you used this version successfully before?
My first guess would be that you aren't connected to the Internet and the change of hard drive means your Pilot details are no longer stored in the PC's memory - if you try again when connected to the Internet and the same thing happens, let us know in this thread with the information I've mentioned above and we should be able to help you
