Hi everybody, i see more than one year has passed and the problem is still present.
This is what happened to me:
I have 2 8800M GTX, on Vista 64 bit.
I started with the 174.33 drivers, and i decided that it was time to look for an update. I downloaded the 175.19 from the Nvidia website and i tried to install.
Like everybody else here i got: "Fatal Error - You are running a 32 bit version of Nvidia uninstaller on a 64 bit system (Binary type I386). Wrong version of uninstaller. Uninstaller exits now."
Right after this you get "NVIDIA Setup Error - Setup detected that the operating system in use is not Windows Vista [64-bit]. This setup program and its associated drivers are designed to run only on Windows Vista [64-bit]. The installation will be terminated."
Then after this you get the first message again, and that's it.
Basically it tells you that you can't uninstall the old drivers because you're running a 32 bit uninstaller on a 64 bit OS, and then that you can't install because you are running a 64 bit installer on a 32 bit OS!!! Basically it doesn't make any sense!!!
I read someone used the Driver Sweeper program to remove all the remaining driver files after a unistallation, so i dowloaded it at
http://downloads.guru3d.com/Guru3D---Drive...tup)_d1655.html, where i also found a newer version of the Nvidia drivers, the 177.83 (how come the Nvidia site does not have the latest drivers and other sites have?), but of course i had the same error messages with these 177.83 drivers.
So i carefully tried the method that Dostoyevsky77 suggests, also using the Driver Sweeper program on top of that, but still nothing. Fortunately i managed to install a version of drivers older than the ones i started with, the 167.62, since i couldn't reinstall my original 174.33, or the newer found 175.19 and 177.83. Now if i go to check the DxDiag program (DirectX Diagnostic Tool) i can see that some tab is missing, as now i have only Display and i'm sure before i had one or two tabs more, something like Graphics 1 and 2 (because i have two graphic cards).
If i try to update the drivers through Device Manager, it tells me that they are already up to date.
Conclusion: I spent about 4 hours of my time and i got drivers older than the ones i started with, and thanks god i actually got any back in the end!!
I don't think Nvidia will ever give a damn about this problem but i'm still posting my experience in case it can be useful to some other user.
Every help is well welcome.
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