Left 4 Dead 2 crashes during loading screen "posters"

[Trunten]

So, I'm not active here, but I'm going to try asking for some help anyway while I wait and see what Steam forums/discussions have to offer.

Honestly, I'm considering reformatting and going to Windows 8, but I'll wait and listen to advice from other users.

First, I'd like to reference this "discussion":

[url]http://steamcommunity.com/app/550/discussions/0/618457398960599994/[/url]

As I've already tried my own amount of troubleshooting.
Someone linked to a website with some fixes regarding common issues.
Unfortunately, none have worked for me.
3, 5, and 6 seem to have closer relation to my problem (6 maybe is more).
[url]http://www.crashwiki.com/top-10-fixes-left-4-dead-2-crashes-errors-freezing-low-fps-steamcloud-character-difficulty-bug/[/url]

As I said in the discussion, I've already tried the following:
Deleted ClientRegistry.blob
Lowered page pool memory
v-sync was already disabled
mat_queue_mode was already on 0
multicore rendering was already disabled

I'd greatly appreciate any help you have to offer me.
Especially since I'm sitting here on a newly built system.
This new system is only a few weeks old, never had a L4D2 problem until now.
So in that regard, I'm rather confident anything the game requires is up to date.

The last time I successfully played the game was a few days ago.
We can rule out any changes to the game or Steam or even addons.
Only thing changed is the passage of time.

I looked in Event Viewer and this was something to stand out:

[i]Faulting module name: ntdll.dll, version: 10.0.10041.0

Faulting module path: C:\WINDOWS\SYSTEM32\ntdll.dll[/i]

It either gets all the way to a full progress bar or very close and crashes.

Windows says "left4dead2.exe stopped working" or something like that.

It then gathers and sends information to Microsoft.

[i]Windows 10 Pro Technical Preview 64-bit
Intel Core 2 Quad Q9550 @ 2.83 GHz
8.00 GB Dual Channel DDR2 @ 533 MHz
ASUSTeK Computer Inc. P5Q DELUXE (LGA 775)
896 MB NVIDIA GeForce GTX 260 (EVGA)
596 GB Western Digital
SoundMAX Integrated Digital HD Audio[/i]

Yea, I know Windows 10 isn't final.
But as I already said before, it was running fine all month.
I noticed the problem started yesterday.
And the game was perfectly fine at least a day or two before.
The rest of my programs all seem to be working properly.
Windows 10 itself is rather stable for me so far.
Only L4D2 is a known problem I'm aware of.
Except for upgrading itself between builds, it's a clean install.
Specifically I've only gone from one build to another.

Thank you for your time and help.

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