All of a sudden, my FMC has stopped telling me when to RESET MCP ALTITUDE. So now I have to rely on sitting next to the computer for hours on end waiting for me to get to T/D. Could someone please diagnose the issue/tell me any repairs possible?

Hi, are you referring to the point where the FMC pause the Sim at about 10nm from T/D and at about the same time you get the RESET MCP ALTITUDE alert?......that can be changed in the options page.

Oh alright, thank you, the aircraft I have been using must not have been configured to my specifications yet.