Do you ever have any trouble at airports? The one time I ever had grief at an airport was a few years ago travelling with an X230 with the larger battery pack. Security seemed extremely suspicious of such an old laptop and I got stopped again later by a plain clothes security guy.
Identical setup here, and yes, checkpoint security at an airport in Germany pulled me to the side and made me turn it on to show it was a functioning laptop
I've never had any problems! I'm surprised airport security would be so concerned about an old laptop. I'm sure they see way strange things on a daily basis.