I am not any type of expert on dump files, but I see some things that might be relevant. First, you can see the kernel is watching a driver, but does not specify which one.
DRIVER_VERIFIER_DETECTED_VIOLATION (c4)
A device driver attempting to corrupt the system has been caught. This is
because the driver was specified in the registry as being suspect (by the
administrator) and the kernel has enabled substantial checking of this driver.
If the driver attempts to corrupt the system, bugchecks 0xC4, 0xC1 and 0xA will
be among the most commonly seen crashes.
Arguments:
Arg1: 0000000000000091, A driver switched stacks using a method that is not supported by
the operating system. The only supported way to extend a kernel
mode stack is by using KeExpandKernelStackAndCallout.
Arg2: 0000000000000000
Arg3: ffffe00134722880
Arg4: 0000000000000000
The drivers below are from 2010, but because they are old doesn't necessarily mean they are causing a problem. You might check and see if you can find an update for them.
What is interesting is the Trixx.sys driver shows as located in your user folder and not in the Windows\System32\drivers folder. Not sure what happened, but if this is an older program, you may have needed to install it in some type of compatibility mode. It looks like the trixx.sys file is related to the Sapphire Video card, so the others might be also. You might check for drivers for the card to see if any new ones are available.
Image path: \??\C:\Users\YourUser\AppData\Local\Temp\TRIXX.sys
Image name: TRIXX.sys
Timestamp: Wed Oct 06 11:14:37 2010 (4CACA06D)
CheckSum: 000101C9
ImageSize: 0000C000
Translations: 0000.04b0 0000.04e4 0409.04b0 0409.04e4
Image path: \SystemRoot\System32\drivers\mvxxmm.sys
Image name: mvxxmm.sys
Browse all global symbols functions data
Timestamp: Wed Mar 17 02:52:37 2010 (4BA08A45)
CheckSum: 0000EA9D
ImageSize: 00008000
Translations: 0000.04b0 0000.04e4 0409.04b0 0409.04e4
Image path: \SystemRoot\System32\drivers\mv91xx.sys
Image name: mv91xx.sys
Browse all global symbols functions data
Timestamp: Wed Mar 17 02:53:06 2010 (4BA08A62)
CheckSum: 0005315F
ImageSize: 0008D000
Translations: 0000.04b0 0000.04e4 0409.04b0 0409.04e4