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Old August 31, 2012, 10:48 PM
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Galcobar Galcobar is offline
Join Date: Dec 2009
Location: Richmond, B.C.
Posts: 430

My System Specs

Default nForce drivers won't install, 32/64 bit confusion

Bit of a puzzler.

I can't get the chipset drivers for my motherboard to uninstall, because according to it I'm running a 32-bit uninstaller on a 64-bit system, and because according to the installer I'm not running a 64-bit system.

For clarification:
OS is W7 Professional 64-bit, motherboard is an Asus P5N-E SLI running the nForce 650 SLI chipset. The latest drivers from Nvidia are 15.57, available in both 32-bit (XP, Vista, 7) and 64-bit (XP Pro, Vista, 7) flavours.

I've found there's a significant difference in read/write speeds between the stock Windows drivers and the Nvidia drivers. I tested various configurations when I first moved to W7 and determined the Nvidia 15.57 drivers with no queuing produced the fastest read results. Tonight I decided to use the driver update utility in Windows, to see if there had been any improvements.

For some damned reason, W7 decided to update to Nvidia drivers from 2010 -- and they're 32-bit, nvstor.sys instead of nvstor64.sys.

Using Device Manager to uninstall the device drivers does nothing except prompt a restart. The system continues to use the nForce drivers and won't even revert to the stock Microsoft driver. DriverSweeper and CCleaner make no difference, and the drivers aren't listed for Uninstall Programs.

Tried using Device Manager to manually pick the nvstor64.sys driver, both from the System32 folder and from an unzipper Nvidia installer, and discovered that Windows thinks the driver is up to date.

When I run the Nvidia installer program, I get a fatal error because I'm trying to run a 32-bit uninstaller on a 64-bit operating system. I hit OK, and the installer then snags, complaining that I'm attempting to install 64-bit drivers to an incompatible system. Running the 32-bit Nvidia installer, I get the error in reverse.

Last edited by Galcobar; August 31, 2012 at 11:04 PM.
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