when i start playing dota, when is first 5-10 passed computer restart automatically, can someone tell me how to fix problem?
A friend of mine had a similar problem once. In his case the pc was restarting after 1-2 minutes.
The problem was his onboard video. After he bought a video card the problem was solved.
From what I recall the game was working on that PC with that onboard video. Started to restart after he changed his OS, I think. He had XP or Vista and then updated to Win7 or something like that.
I've asked help in this thread:
http://dota.eurobattle.net/la/forum/index.php?topic=162264.0 (you will find more info and suggestions there).
You can be sure that is a hardware problem.
Try to run some tests like: starting the game windowed (not fullscreen). Do it on non-ladder games (create your own with .dota command instead of !gopub)
This is all I (and I think "we") can do for you, as Lexy said. Srry!