This has happened twice last week. I left mac , totally at ease, meaning: only mail and itunes were turned on. Energy save settings are set to activate screen saver after 45 minutes, and sleep mode to start after hour and a half. After I came back to my desk ( more or less after two hours) , I found mac with frozen screen saver , and fans blowing at their Full speed, which sounded like a washing machine; the system was completely dead, so I had to restart the computer manually 
I've got no idea what might be th reason . The room has intentionally no heating inside , and the fans are not covered ... But the most tricky thing is for me that mac was doing Nothing ... i maen it wasn't rendering, calculating or even downloading ... absolutely nothing.
My mac has been quite troublemaking since I bought it. It happened that it could suspend to death when just lookin at my artwork in illustrator ... just looking , not working.
All right, enough. Please help me bacause guys at helpdesk are making me crazy, suggesting me to buzz off without solving a problem. Could this be a hardware problem or software problem?
THANK YOU FOR YOUR SUPPORT !
I've got no idea what might be th reason . The room has intentionally no heating inside , and the fans are not covered ... But the most tricky thing is for me that mac was doing Nothing ... i maen it wasn't rendering, calculating or even downloading ... absolutely nothing.
My mac has been quite troublemaking since I bought it. It happened that it could suspend to death when just lookin at my artwork in illustrator ... just looking , not working.
All right, enough. Please help me bacause guys at helpdesk are making me crazy, suggesting me to buzz off without solving a problem. Could this be a hardware problem or software problem?
THANK YOU FOR YOUR SUPPORT !