So this is a problem I have been having recently. Skyrim was running fine for months, but suddenly, every time I play the game invariably crashes. This does not always happen at the same time: some times, I can play for 15-20 minutes before the game crashes to Desktop, and at other times, it crashes as soon as I load up a fresh save file. There is no error message, no error sound, the game simply closes off as if I had alt-F4'd. Has anyone else ever had this problem? I tried disabling all of my mods, as well as disabling Dawnguard, and it doesn't help at all.
Also, does this mean my save file is corrupted? I tried telling Steam to verify the Integrity of the Game Cache, and I keep getting the message "1 file failed to validate and will be reacquired," but besides the message I get nothing.