There are two types of dump that you can configure:
1) "All of kernel memory" - ends up in C:\Windows\memory.dmp
2) "Small memory dump" - ends up in C:\Windows\minidump
You're configured for #1, aguen
gave instructions for #2.
Take a look and see if you have a recently-written C:\Windows\memory.dmp. Though it might be too large to upload.
It might be worth switching your config to "small memory dump" so you can collect more than one, since we may need to look for commonalities.