BSOD when playing Dota 2 (graphics on high)

Hi, i first experienced this problem when i used to play Heat Online (mmo racing game) at full graphics, now its happening with Dota 2 when i play with video settings on high (and rendering at 100%), it almost wont happen if i play with everything on Low (it has happened once with low settings so far), heres what happens:

Im playing and suddenly the screen freezes and gets messed up (the way snes or nin64 games used to crash if you would hit the console or move the ) for a couple of seconds then the monitor shuts itself down (the way it does when the pc goes to sleep or turnoff computer, power saving mode) then after that nothing happens, sometimes if i wait a couple of minutes a bluescreen appears for like 3 seconds then the pc restarts, and thats pretty much it, i hope you understand my explanation xD my computer meets the recommended sys reqs for this game others as you will see on my system info that im attaching :)

Edit: Also forgot to add that, if im listening to music (on winamp) while this happens, when the screen goes black the music goes on and i can even change songs using my keyboard "Next" button, but after a little while the song sounds like a robot dying and then it stops xD i hope is not a hardware problem D:

hope to get an answer soon thanks