So I take the opportunity to do a nice reformat of hard drive seeng as my rig needed an enema anyway.
Wow.
Serious stuff here...
Suppose your vidcard cooler, for whatever reason, was not working very well.
Maybe it's clogged full of lint, your case has poor airflow, and you have chosen unfortunate video settings?
These factors can cook your vidcard.
The .dll fix is evil, don't mess with it, nobody needs it (I sure don't).
The one ini fix I have heard about adds the 2 lines to the [general] section, to disable use of more than 2 cores...
But I suspect your vidcard. What is it?
The new nVidia drivers (260.99) are a godsend, very good improvement.
Also, my Steam verify thing says 'one file unverified' and then - very quickly - the Steam update thing pops up, saying file acquired.
But it's like it downloads 500KB or something; it's very brief.
If you have overclock settings in your rig's BIOS, disable.
If pushing system memory very hard, disable.
Set your vidcard controls (nVidia Control Panel or ATI CCC) to all high-performance settings, and don't force AA, AF or vsync.
Tell me about your vidcard. Is your power supply up to the job?
The total collapse of your vidcard is not OS or Steam related, I'm afraid.
I suspect your vidcard itself - its cooling and its power supply.
The only damaging contribution that could come from you would be unfortunate game settings...
In this scenario, if your vidcard is marginal, you must try no AA, no AF, no vsync and minimum settings to see if it will begin to run.
Vidcard coolers (the ones that come stock) svck. They usually pooch out within ~1 year.
You can buy a big, nasty Arctic Cooling copper heatpipe vidcard cooler for like $39 bucks.
Beautiful.
So again, there are methodical ways we can determine precisely what's going on.
Don't worry, your rig will work again!
It's just kinda unpleasant for the moment...
L8R