Hi and welcome to SF,
Firstly Im no expert on BSOD but I maybe able to point you in the right direction.
Both crashes are relating to your DirectX Graphics MMS
Could not read faulting driver name
Probably caused by : dxgmms1.sys
DirectX Graphics MMS which is a windows update. (check to see if windows update has updated this?)
Have you recently updated your graphics drivers?
I would suggest that you roll any ATI Graphic drivers back if
recently updated by yourself? Or check Windows Updates for DirectX.
But first you will need to get the computer started, have you tried a system restore from Safe-mode to before the problem began? May help you get up and running.....choose Option 2 from the following link: Safe Mode
Good luck and post back any progress