If none of these solutions helps, try Googling the problem – you may have run into a game-specific problem with a game-specific solution or just a more obscure Steam bug.
If a game fails to load, crashes as soon as it loads, or crashes when you reach a specific level, your game’s files may be corrupted.
I've already tried cancelling and re-validating before, to no avail.
OS: Windows 8 64 bit If after doing what you already did, you are left with deleting and re-downloading or hoping (rather blindly) that a future Steam update may fix the problem.
Here's what it looks like: Both were free and both download updates incessantly, so I uninstalled them.
I've been aware of the validate steam cache files for a while.
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.
Do not run this process for multiple games at the same time.
Corrupted files can also cause a multitude of other odd game bugs.
To fix corrupted game files, you can have Steam validate the game’s cache on your system.
I have 4 other games installed on Steam and all of them are able to successfully validate all files.
I've tried completely uninstalling and reinstalling the offending game to no avail.
I recently restored my computer back to factory settings (clean os) after screwing it up, but I kept source 2007 shared materials.gcf, source 2007 shared models.gcf, source 2007 shared sounds.gcf, source materials.gcf, source models.gcf, source sounds.gcf, team fortress 2 client content.gfcf, team fortress 2 content.gcf, and team fortress 2 on a 16 gb flash drive, so I could just verify integrity of local cache and not have to redownload 13 gb of stuff.