Hi,
This is something very commonly: heat problem.
If the CPU gets overheated - it will shutdown due to a protective inbuilt safety circuit, so no damage to the will occur.
It might be that your cpu and grachics card is filled with dust inbetween the flenses?
To find out if it has some strange temperatures or voltage: download and install HWMonitor (free)
http://www.cpuid.com/softwares/hwmonitor.html
To the left download the free version.
Obs! during installation make sure that you untick any third part s/w. I always recommend this procedure no matter what on any free s/w. Ok.
Then, in the HWmonitor window there are three columns:
Value= shows the actual readings from all the sensors including temperatures and voltage
Min and max speaks for itself.
Now, Start the most cpu heavy program you have and work with it, surf the internet and perhaps watch an on-line news film.
Then quit all these programs/webbrowser and take a reading from HWmonitor, which of course you have been running in the background:
In the column Max: what does it says?
Post the values here or you can also click 'File > Save monitoring data > it will be a text file and attach that into your next post.
CPUTIN = CPU Temperature Index
AUXTIN = Auxiliary Temperature Index
SYSTIN = System Temperature Index
CPUTIN is different from CoreTemp. CoreTemp is the sensor on the processor
Not at all confuse with the:
CPUTIN motherboard CPU temp sensor.
AUXTIN is the power supply temp sensor if there is one.
SYSTIN relates to Motherboard.
TMPIN 0 = MOTHERBOARD = SYS
TMPIN 1 = CPU
TMPIN 2 = MCH = Northbridge
TMPIN 3 = Sensor near GPU/VRMs
In HWMonitor it is these values which are important:
in the HWmonitor window there are three columns:
Value= shows the actual readings from all the sensors including temperatures and voltage
Min and max speaks for itself.
You have only to pay attention for these.
Best regards from Sweden
Ps. just a long-shot...
Best regards from Sweden