Sony vaio laptop keeps turning off

Hi friends please help me my laptop keeps getting off while working I checked web and I found the temp of my computer as follows I couldnt understand please let me whats the problem
TZ00 VALUE RANGES FROM 79 DEGREE C TO 99 DEGREE C
INTEL CORE CORE 0 79 C TO 91 C CORE 2 79 C TO 99 C ASSEMBLY 42 AIRFLOW 42 NVIDIA TMPINO 74 I
iam not a computer literate so unable to understand please help my left side of laptop is hot air flowing what to do to cool it
 
It's not usable with those sort of temperatures and its shutting down so that the excess heat doesn't damage the laptop. It'll need cleaning out to remove dust and fluff. Quite possibly heat paste needs to be reapplied to the cpu and gpu chips. I suggest that you get a computer shop to do this for you. How much it costs will be largely down to how much work is involved in getting inside it but it shouldn't be particularly expensive. Remember that a laptop should be used on a hard flat surface.
 
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