restarts

I have the problem when i start esf openbeta 1.3 i create a lan server they load all normal then before the game starts my computer restarts automaticlly. I have Steam with Half-Life. Sorry for my bad english

Well, if I leave my PC idle for a few minutes (5-10 minutes) my compute rrestarts and when it loads up, i get some error messages. Two out of three are Disk Read Error. and second one is Reboot and select proper Boot device or Insert Boot Media in selected boot Device and press a key...

Alright, Im attempting to make my first map and whenever I try to select a character, the server restarts!! Whats wrong??? Could it be the entities??? And what entities are needed??? This is my first try so I need a lot of help, and yes, I read a tutorial!! Then again, it was one for Firearms...