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Fallout New Vegas launcher crash (used to work)

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#1 KazF


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Posted 26 November 2011 - 12:18 AM

I'm not sure whether these are two different issues requiring separate topics, or related, but I've been having a problem getting Fallout: New Vegas to work after updating my service pack to 3 and my graphics drivers in order to install Flash CS5.5. After working fine for almost a year, the game now crashes on the launch screen and I've tried so many things to fix it, so I decided to ask for help on the Bethesda forums. The forums require a DirectX Diagnostic log, and that's where my second problem starts.

DXDIAG freezes every time I click Save All Information. I'm up to date with DirectX 9c, which is as high as my Windows XP 32-bit will go, so I don't know what the problem is. Since DX is needed to make the game function, I'm wondering if the two issues are related. I don't remember ever running DXDIAG before, so I don't know if this problem is new.

As far as solutions, the most common one of changing the game's compatibility to Windows XP isn't an option, since I'm already running it. I tried rolling back to service pack 2, then reinstalled SP3 and got the 50+ Windows updates waiting for me. I don't have any system restore points (turned off during virus troubleshooting and forgot until now). I tried uninstalling the new drivers and reinstalling my card's old drivers (NVIDIA GeForce 8400). Defrag did nothing. Verifying the integrity of my game's file cache in Steam, which downloaded a few files, did nothing.
What do I do?

Edited by KazF, 26 November 2011 - 12:19 AM.

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