What happens is that every 15 min it just shuts down, it goes to sleeping mode. I have looked at the settings and it's supposed to go to sleep after 2 hours, but thats the thing it shuts down even when i do something on it. I have opened it even though i know thats stupid. I did it becase i thought there was something stuck in the cooling fan on top of the processor, but there was nothing there. To get the computer to start again i have to blow into the fan area three or four times.  I don't know i hope you guys know why this happens i would really appreciate all the help you can give. 

P.s Im sorry for my bad english, Im from sweden.
user
computer shuts down every 15 minute,
assistant
What happens is that every 15 min it just shuts down, it goes to sleeping mode. I have looked at the settings and it's supposed to go to sleep after 2 hours, but thats the thing it shuts down even when i do something on it. I have opened it even though i know thats stupid. I did it becase i thought there was something stuck in the cooling fan on top of the processor, but there was nothing there. To get the computer to start again i have to blow into the fan area three or four times.  I don't know i hope you guys know why this happens i would really appreciate all the help you can give. 

P.s Im sorry for my bad english, Im from sweden.
user
computer shuts down every 15 min
assistant