Right, you need Rivatuner, its a very small program that will give you a new tab on your Nvidia control panel. Once its installed go to your Nvidia control panel and go to the Frequencies section and change the option to manual overcloking and lower your memory clock speed.
Yep, definitely a card problem. I had a similar problem with my last card, an ATI 9800 Pro. The bottom half of the screen was checkered with those black blocks and the textures on the models were corrupted, having black pixels "sprayed" on them.
In my case it was nothing software related nor overclocking. I reinstalled my whole system, tried multiple drivers, happened in every 3D app including video and I do not overclock.
The only solution, for me at least (probably you too ) is to replace it. Woot for RMA
i had the same problem a long time ago with my geforce 2 gts gfx card.I removed the card and heatsink and cleaned all the dust off,no problems after that and the card is now happily working in my dads pc,must be about 7 or 8 years old now
Tango
I had the same problems once on my old gfx card. I soon replaced it with a brandnew 9800 Pro and everything is fine ever since. So it seems like your card is somehow screwed. But if you just bought it, you should still have warranty ...
Hi again,
Dod you try to downlock the memory to 800Mhz as I suggested and test it then if you have still problems?
Please try it and let us know after that.
hey thats a pretty cool vertical blind effect its generated, if you could get then to turn open to display program screens underneath it would be pretty damm goo.....
oh who the hell am i trying to fool, it would look bloody awfull
If its new, get it replaced, should have warranty for a good while yet. And if you cant get it replaced, and need to buy a new one, i suggest you get a 7600GS, they're about the same price, but blow the 6600GT out of the WATTAH.
When you uninstall the drivers, then the mainboard probably reverts back to onboard drivers, or uses very minimalistic graphics modes of your GFX card which don't show the memory error.
As said, with no drivers the PC will revert to very basic drivers capable of simply doing the job of displaying an image, itll run at 16 bit colour and a minimal screen reolution and the PC will run extremely slowly when you are moving windows etc around the screen. No drivers will pretty much not stress the card at all and im not surprised its fine due to how minimalistic your operating system runs without drivers.