BDOD when playing Heroes of Newerth,error 0x00000050

Are the games settings set to max? You might want to lower them, see how they perform.
So you mean you're sure that you get no BSoDs while normal usage? Just during games?

Hmm, since you're connected to onboard VGA now are you getting BSoDs?
Watch videos, play a game. Let us know

Enable driver verifier
Give me all the dumps you get in next 36 hours
Driver Verifier - Enable and Disable

GoodHammer said:

erm..can i connect back my video card?

Yup

Code:

fffff880`09031048  fffff880`05274872Unable to load image \SystemRoot\System32\Drivers\dump_nvstor.sys, Win32 error 0n2
*** WARNING: Unable to verify timestamp for dump_nvstor.sys
*** ERROR: Module load completed but symbols could not be loaded for dump_nvstor.sys
 dump_nvstor+0x18872

fffff880`090322d8  fffff880`0f0ec7c9Unable to load image \SystemRoot\system32\DRIVERS\nvlddmkm.sys, Win32 error 0n2
*** WARNING: Unable to verify timestamp for nvlddmkm.sys
*** ERROR: Module load completed but symbols could not be loaded for nvlddmkm.sys
 nvlddmkm+0xbd7c9

Your dumps show problems with the Nvidia stuff. Did you try lowering the settings for the games like I said? or are you still playing at max settings? Lower them and see if the problem is reoccuring or not, look for updates on the games. Also, do you have another video card to test with?

Take this test:
Video Card - Stress Test with Furmark

• Video Card - Stress Test with Furmark

Monitor your temps with Speccy during these tests

• Speccy - System Information - Free Download