First post, by Nicht Sehr Gut
Had to reinstall Windows98SE just recently. Archived my GliDOS setup, put it back in it's original location after the reinstall. Now, the logo has returned (although oddly, not on the main menu of Tomb Raider). I know you said keys were tied to the hardware, are they sensitive to OS changes as well?
I did swap a hard drive, would that trigger it?