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How to enable CUDA on Thinkpad T61/Quadro 140M?

post #1 of 2
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I have a Thinkpad T61 with Quadro NVS 140M graphics. I've installed the latest 280.19 drivers and NVidia control panel shows 16 CUDA cores.

However, when I start a program that can use CUDA, such as Xilisoft video converter, the "enable GPU acceleration" box cannot be checked. When I try selecting it, it gives me an error saying my drivers do not support CUDA.

I've tried 275.33, 280.19, and even the Nvidia notebook CUDA developer drivers. Nothing worked. Anyone have ideas on how I can enable CUDA?

Xilisoft's website does list the NVS 140M as being supported on their list of supported GPUs.

Here's a picture. Notice the "CUDA" box is checked in GPU-Z, but Xilisoft's says "drivers need to be updated to support GPU acceleration"

ifpshu.jpg
Edited by 996gt2 - 8/6/11 at 10:20pm
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5 GHz SFF Box
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post #2 of 2
Are you using the free trial version? Perhaps that's the problem.

When you're applying new drivers, how are you going about doing it? Are you uninstalling the drivers first, then restarting and applying the new drivers? Are you using something like Driver Sweeper to remove the older drivers?

That's really strange, because if it is listed, it should be enable-able (is that even a word? lol) I'm thinking something went wrong with the driver install process somewhere. Here's what I would do, and in this order.

Open Device Manager, and uninstall your Quadro drivers.
Use Driver Sweeper to clean up any remnants left over
Use CCleaner to get rid of all temp files (just in case some of them were used by the drivers)
Use CCleaner to clean out any registry entries that still refer to the now removed drivers.
Reboot in to Safe Mode
Install new drivers
Test to see if it works now. If not, repeat from the top with new drivers.
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