Lets see if bluescreenview will give us a better discription of whats going on.
Download
BlueScreenView
No installation required.
Unzip downloaded file and double click on
BlueScreenView.exe file to run the program.
When scanning is done, go
Edit>Select All.
Go
File>Save Selected Items, and save the report as
BSOD.txt.
Open
BSOD.txt in Notepad, copy all content, and paste it into your next reply.
How long ago did you buy it? With it being under warranty and if we can't figure out what is causing it then you can always take it in and have them look at it. Maybe you can get a new one out of it. Where did you get it from?