Found a massive thread on nvidia forum...
 
http://forums.nvidia.com/index.php?showtopic=207666&st=800

This isn't an in game issue.... never happens in games.

Did you read the post or just scim?
 

I thought the newer drivers were locking up my internet browser but it turns out that the newer versions of Firefox are just garbage. I switched to Google Chrome and dont have any issues. I also had a problem with games CTD and it would cite driver stopped working as the problem. I raised the voltage on my GTX 570 and havent had any issues since.

I thought I'd chime in as well.  I have a GTS 450, and have been having this problem for a long time. 
 
I originally had an EVGA 8800 GT which was giving me sudden artifacts which would result in either a driver has stopped responding error or I would lose signal to my monitor.  This was with Windows Vista.
 
I got a new EVGA GTS 450, I had the exact same problem.  I replaced my PSU, upgraded to windows 7, still had the same problem.  I RMA'd my card, got a new one, and while I don't have the artifact problem anymore, I still get the flickering of my monitor on and off whenever I turn on Firefox, or any game.  My temps, voltages, etc are all within spec.

Bowenac

Just installed latest chipset drivers and after it finished it asked me to restart clicked ok, and got a nvdklm bsod when it restarted...

This was on the screen when it loaded back up... Getting tired of this. At this point not sure if it is the cards or the drivers since every driver I have tried does the same thing...

I can already tell by your partial screenshot, this is the exact same BSOD I've started experiencing on my 2x 460GTX SC. I tried the latest beta drivers (board is an x58) and it won't allow me to enable SLI so I've been forced back to the last WHQL release (285.85). It happens infrequently (I'm currently only playing SWTOR) but I was off work last week and it happened out of nowhere two days in a row.
 
If it happens again I'm going to be hitting the legacy drivers section on Nvidia's site and see if it alleviates itself.  Based on input in this thread, that might very well be the solution.

I had the TDR issue with Win 7 64 Bit only while browsing with Firefox.  It would happen up to four times a day.  Once I saw that huge thread in the Nvidia forums the O.P. linked I switched to Opera and haven't had a single TDR since.  From what I understand its related to the hardware acceleration used in Firefox and some incompatibility with Nvidia's 28X.XX drivers on.  From what I've read the next WHQL driver should have a fix.  I've been using the 290.53 beta drivers since last month, but haven't used Firefox with them, so I don't know if the TDR problem exists with them as well.  I can say they don't happen while using Chrome (which I switched to a couple weeks ago) with those drivers.
 
Basically, its an Nvidia/Firefox issue that's known and being worked on.  Since there is a relatively easy work-around (don't use Firefox with current Nvidia drivers) I can live with it.  If it happened while I was playing Skyrim that would be a different story. 

Bowenac, 
Can you try and run memtest, and see if you get any errors? I posted in another thread about this, but it could be caused by bad RAM. Especially if you got a BSOD. I would run memtest for a few hours and see what comes back. Have you tried the card in a different machine?
 
Or a different card in general?

Bowenac

It's pretty obvious it is a driver issue...

I tend to agree.  When it first started with me I ran Memtest one evening and it was fine.  It also happened on the same PC and fresh install of Windows 7 with both a GTX 460 and a GTX 560, so it wasn't memory or specific GPU related. 

Its easy to just assume its a driver issue. But maybe doing some more troubleshooting can rule out any hardware problems

If by reading the massive amounts of threads and comments on this forum, no I haven't. I venture out and actually use google.

http://www.nvlddmkm.com/?p=17

Also check out there other solutions at nvlddmkm.com

It's sad when people actually give first hand experience of the issue and how they fixed it, yet you just shoot it down. Hope you fix it.

The only drivers that I have found to be nearly 100% stable with my sli 480`s are the 266.58 series. Sadly I am convinced that the newer drivers just don`t like the early release FERMIS very well. 
Happily though. My performance has been very good with the 266.58`s so that is what I am sticking with.

266.58 seems to be fine been running it for a couple days now with now issues.
 
Still no word from evga awesome.

To be perfectly honest there seems to be a real hit or miss issue with the TDR/nvlddmkm problem across cards.  Though drivers.  Anything after 275.33 is seriously hit or miss.  I had three different cards all experience the same problem on three different boards, on three different configs, but once I went to the 290.53 the problem went away.  I do believe it's directly related to the drivers, but there has to be something very specific to the cards and voltage that causes the problem.

I just added a second GTX 470 in SLI. (drivers 290.53)  I don't get any crashes, but it freezes on boot-up and sometimes double posts. I did get the whole "SLI option missing", but that was an easy fix.  Just roll back your Realtek network drivers.  SLI option comes right back.  It's weird.  I may try a clean sweep and install on the nvidia drivers, but I'm not convinced it's the drivers.