The MEMORY.DMP file is located in the C:\Windows directory
It's overwritten each time that you have a BSOD - so it's important to save them until you reset the system to save minidumps.
To do that, please follow the directions here: Set MiniDump
Meanwhile, you can zip up the current MEMORY.DMP file and upload it to a free file-hosting service. Then just give us the link to it so we can download it.