Cannot Fix Corrupted Files on Steam for Fallout New Vegas

So, on Steam, I have Fallout: New Vegas Ultimate Edition. I've been playing it like crazy, and I've already got to the Strip within the day and a half I've been playing. I go to Silver Rush, steal a few items in there, and ask the woman who owns the Silver Rush in Freeside for a job, and after giving me the guard job, I head outside. I talk to the guard, I get my items, I sit for half a minute, and then the first NPC to walk up to me does so, a drunk. After turning him away, the guard starts to praise me, and-

The game crashes. Fallout: New Vegas has experienced an error, pops up on my screen. I wait for it to say Close Program, I close it, and go to my Steam Library. I right-click F:NV, click Properties, and verify my cache. Uh-oh, a game file had failed to validate. It says it will be reacquired, and for a few seconds it downloads, then the game starts up. I play for two-ish minutes, and upon turning the drunk away again, it crashes.

It kept doing that. Over, and over, and over, and over. I could not play the game. I tried deleting and then re-downloading F:NV about four times, I tried verifying the cache about twenty times, I even deleted Steam and re-downloaded it, hoping it would work. Nothing changed! Every single time, it says "1 file failed to validate and will be reacquired." Whenever I try verifying it.

Does anybody know a possible way to fix this problem? Thanks.

Solution 1:

Did you check your hard disc? Please try to verify if there are destroyed sectors. I've had a similar problem which caused this in Borderlands 2 for me. Steam always used the section with the destroyed sector and the re-downloaded file was always broken again. After running the fix process and re-downloading it, everything was fine for me.