My computer is turning of when i play games

[tomo1996]

I have this computer for a year i could play any game on it black ops, assassins creed brotherhood, Mw2,.... One week ago my computer sudenly turend off while i was playing mw2,after that i tryed another game and then i started playing cod 1 also its anoying my power supply works fine i cleaned the computer from dust,now even on youtube my computer starts crashing could it be a virus or overheating i checked i also checked my computers temperature before it was 27 now its 37 when im not playing games when i play about 47 (before37).

I have

Ati Readon HD 4800 series
Intel(R) Core (TM)2 Duo CPU E7300 3.66GHz
4 GB Ram
Microsoft Windows xp Profesional

 

[sportsfanboy]

GPU-Z for graphics monitoring and try realtemp for the the cpu. Set them to log a file, play a game and check the temperatures after VIA the log files to rule out over heating. What do you have for a power supply?

 

[tomo1996]

I tryed with Realtemp temperature
39 32
distance to max
61 68
thermal status ok

Power supply

Model NO:Z400-08FC (400 W) peak

 

[tomo1996]

now i will try when playing a game what the temperature is

 

[tomo1996]

when i am playing a game the temerature is now
39 34

 

[Kewlx25]

sudden power drops is usually a temperature safety cut-off or your PSU is starting to die. Seems your temps are fine, I would try a different PSU and see if it fixes it.

 

[tomo1996]

I changed my power supply and it works fine now tnx a lot