It has happened on two games now: Total War Rome II and Call of Duty Ghosts.
Both games crash frequently and both games find files that fail to validate, but they NEVER have all files successfully validate and I've been unable to get either to run without crashing after 10-30 minutes.
Steam will examine the game’s files and – if any problems are detected – will re-download the corrupted files from Steam’s servers.
To validate a game’s cache, right-click the game in your Steam library and select Properties.
I've also run the Disk Checking tools from my C Drive Properties Tools menu, as well as run "chkdsk /f" which runs chkdsk on boot, neither run showed any errors in the drive.
I've set my BIOS back to defaults with no overclocks and eliminated all but the essential services and programs from starting doing boot, including disabling my antivirus. I'm at a standstill with both Steam and Activision support, and I haven't been able to find anything with Google, so I'm REALLY hoping someone here might have some ideas.
Many problems might be caused by corrupted game files, e.g. If you have encountered such issue, please verify integrity of game cache and load game save file made before this issue occurred (if possible).