I had SimCity 4 Deluxe installed and running on Windows 7 64-bit without any major issues for a few months. As far as I can remember, I do not think I even had to adjust compatibility mode, or tweak the command line launch options. Few days ago it worked fine, but yesterday I had tried to launch it, but it failed to start.
SimCity4.exe process appears in Task Manager, but only takes up 1.7-2.3 Mb of RAM and nothing happens (no error messages, no activity whatsoever). I checked Windows Event Log, as per suggestion in comments, it does not throw any errors. I suppose system does not deem it as an error since the process continues to run, and does not crash.
I had not install any new software recently, and latest Windows update was installed two and a half weeks ago, i.e. it could not contribute to the issue conceivably. The only thing I did differently game-wise is save on exit (before I would customarily save the game, or save and exit to region, and only then actually exit), but that would not break the installation, would it now?
Before I try reinstalling it, I would like to comprehend the mystery of what had transpired. Is that game files corruption issue? Is that some sort of system glitch? I would appreciate any input in answers or comments to help diagnose the problem.