Sony Vaio SVE151G13M turn off after a while

Hello!
My sony vaio going to turn off after a few minutes. Temperature is very good and notebook was cleaning few times. Sometimes it was happen few seconds after a start, on the bios level, but in majority it is few minutes after a windows start.
Maybe someone have the same problem with that model,
Thanks for help
 
Please check Event Viewer to see if there are error messages which can help.

Any codes or beeps might help too.
 
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