Grimrock

After you set the nVidia GPU as prefered GPU, does it now show up in grimrock.log?

try restarting Steam too

Dr.Disaster wrote:After you set the nVidia GPU as prefered GPU, does it now show up in grimrock.log?

After restarting steam ,it still crash... log didn't change too

so the game can't see your nvidia card .. might be a bad or damaged nvidia driver.
I heard of such problems to happen after a system update to Win10; you can try reinstalling / updating the nvidia driver.

does the game run when you set your Intel HD as preferred card?

Nope, crash .. ・ﾟ・(ノД`)・ﾟ・
i have sth to do now.. take leave for a while

It might be a stupid question but: is your nvida card enabled when you look at it in Win10 device manager?

Dunno how long it's been since you installed or updated to Win10. The reason why i ask is that there are reports of multi-gpu system users (usually gaming laptops) who found only their integrated gpu working after upgrading to Win10 while the more powerfull second gpu has been disabled. Those users had to manually re-enable it in device manager before they could use it again.

No,it is enabled and running well.

Ryoria wrote:Nope, crash ..

That's actually pretty strange. Even when the game - for whatever reason - can't find/see your nVidia card it should at least run on your Intel HD. Since it doesn't there might be something missing on your Win10.

Did you manually re-run both redistributables that come with the game?
They are located in the subfolder "_CommonRedist" in the game's installation folder; Steam can take you there.

That's actually pretty strange. Even when the game - for whatever reason - can't find/see your nVidia card it should at least run on your Intel HD. Since it doesn't there might be something missing on your Win10.

Did you manually re-run both redistributables that come with the game?
They are located in the subfolder "_CommonRedist" in the game's installation folder; Steam can take you there.

I have re-run them just now,both setup successfully. But still crash.....

k, final idea: driver reinstall because i still suspect a bad driver/registry setup

- download the current nVidia driver for your card from nvidia.com
- download DDU from here
- unpack and run DDU
- pick "Safe Mode (recommended)" and click "Launch"
-> Win10 will reboot into safe mode.

DDU should re-open by itself. In case it does not, just run it with the "Normal" option.

- select "NVIDIA" for the driver setting and then click "Clean and restart"
-> Win10 will reboot into normal mode

- run the nvidia driver installer you downloaded above
- select the "User Defined" install option
- remove driver stuff you do not need from the shown list i.e. the 3D driver
- select "reinstall option" below the list
-> let the installer complete; might include another reboot

Now set your desired options inside nVidia control panel and then run the game.