NVidia GF GT 325M - black screen on high-requiring games

Sorry, I'm making quite a mess in this forum, cause I've already posted identical post in other thread, but nobody answered me yet. So I thought the reason of this, is that this thread is marked as solved (which isn't, frankly I think) and none is even looking there to check if something new has appeared. And I posted there, cause my problem is similar to that one (I could name my as an extrapolation of that one).

Well: I've got notebook:ASUS N61JV, with CPU Intel Core i3,and Graphic: NVidia GeForce GT 325M. Without an OS. I installed it later (this OS on the left, under my user name)

At the beginning it looked fine: I didn't have black screen - I could see everything on screen, move around system etc. I installed NVidia driver from CD attached to product. And in order to test it I launched TR: Legend (one of games with very good graphic). Looked beautiful and moved fluent until I changed details to maximum. Then I was surprised, cause it looked worse, than on old GF7900!!. I thought "somethings wrong..." and started to dig in Nvidia driver settings (unfortunately, I don't remember what I've changed). Big mistake. Only effect I got is so, that when I start ANY game with good graphics, there's only black screen waiting for me. Bah! One game, when I try to launch it, gives me such a warning:

Your CPU type « INTEL Pentium-II » is below the minimum requirements.
Your videocard « Intel(R) HD Graphics » is not supported.

Do you want to launch the game anyway? [Y/N]

So, maybe it does mean, that I somehow turned off Nvidia permanently, so it does not start working when needed (as Stormy said many times in that thread). I tried many thigs, including:

• Digging in Nvidia driver settings more and more in order to find, what I've changed,
• Reinstalling Nvidia driver,
• Installing Intel driver from CD, though it somehow installed itself, maybe Windows 7 downloaded it,
• UNinstalling Intel driver - bad choice, effect - black screen all the time. Luckily after restart, Windows 7 installed VGA, so I could install Intel driver again.
• UNinstalling and installing again Nvidia driver,
• Finally, tried to restore system to point before this digging in settings of driver. Surprisingly - even this didn't help!!

I'm desperate now. Windows works, but games - not. That's not what I have paid for! The only step I can think of now, is reinstalling whole OS, and starting everything from the very beginning. But this is ultimately. And no more DIGGING....

Have any clue, how to solve it?

Mhm, first thing I did now, is that I restored system to the very beginning this time, and installed all the drivers from CD, as at the first time. It worked, but not at maximum details (as at the beginning). An, this second game (what is POP Sands of Time) worked also, though it was showing this message (already quotated) at startup.

Then (i.e. before 10 minutes) I installed this driver for nVidia from official page, and now doesn't work good. I think that before this, games was using this intc. egrated graphics card, now they're using GeForce at last. What is happening, is that textures don't render. Only color things are non-3d (like main menu), or special effects such as lights, sunrays, colour fog etc. I think it's some problem with shaders, but I've no clue how to get through this...

Have you tried the latest driver for it from Asus?

ASUSTeK Computer Inc. - Notebooks - N61Jv

Looks to be the 257.37 (only a couple of weeks older than the latest from Nvidia). I have a feeling that with the laptop having both the Intel and Nvidia video in it, Asus has probably modded it somewhat in order for the two of them to work together (which if they did will e missing from the reference Nvidia driver).

Maybe I'll try, but first - i think it's not shaders. I disabled fog in graphics settings of game, and everything have become visible. So why this fog is 100% (such, that i don't see anything)? And it didn't fix one more problem: mouse cursor in this menu goes slow as slug.

Forgot one thing. Since I've installed official nVidia driver, there's only one of these messages in POP:

Your CPU type « INTEL Pentium-II » is below the minimum requirements.

I have no idea, why he thinks it's Intel Pentium II !!

I'm downloading this driver from ASUS right now.

I'd rather not... I'm too afraid of my notebook. It's too risky.