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My main computer is a Lenovo M92p with Intel i7 3770, 16gb of ram and intel hd graphics 4000.
Every once in a while my computer just freezes completely, and shuts off after about a minute. All I can do is wait for it to shut off or shut it off manually with the power button; nothing else works.
There doesn't seem to be a rule for it, it just happens randomly, it can happen once a day or once a week. What I have noticed is that whenever it happens, I have to let the computer "rest" for a while, otherwise it usually freezes after a short amount of time again.
It doesn't matter what operating system I am using, or how much times I keep formatting my system; it keeps happening. Right now I am using Ubuntu 14.04, but it also happens with Windows.
It seems that the problem might have something to do with temperature of some components, but everything seems to be cooled properly, the computer never heats too much and always stays quiet.
The problem has been occurring for a very long time. I posted a thread in the Lenovo forums, but no one was able to help.
I did clean the front fan last month because it was very dusty. I will try your other suggestions. It is hard to determine whether the issue is resolved or not, because it is not something that i can trigger, i just happens randomly, once a day, once a week and sometimes even once a month. – Arik – 2015-07-22T05:09:46.707