Your error 0x1A: MEMORY_MANAGEMENT
This memory management error is usually hardware related. See the General Troubleshooting of STOP Messages checklist above. If this occurs while installing Windows, also check the Windows system requirements including the amount of RAM and disk space required to load the operating system.
The probable cause cited is the VISTA OS driver dxgkrnl.sys This is a direct X Graphics kernel.
Another VISTA driver of interest is found in the Process _Name section of your dump called dwm.exe. From my research I found the following:
It is used for Aero as well as used for displaying smooth graphics and effects in vista. Several sources said t can sometimes be heavy on CPU/Memory usage as it renders or runs out of resources. I don't know if the follow ing is true as I have never had to deal with it: "Ending it once will make it auto-restart itself - ending it again will make it permanently go and make the system use basic window management"
Another source said, "Cancel the Visul themes and U`ll be fine, Yea it takes a lot of RAM!"
* One thing that kept repeating is the RAM usage.