Lately been trying to get back into WoW and for some reason around 15 minutes after i start playing my entire computer shuts down, everytime without fail, but then sometimes randomly itll let me play for about an hour then shut down. no idea what to do here.

How exactly does it shut down?

Check out this thread:

http://www.d-a-l.com/help/showthread.php?t=50190

Could also be simply heat.

o no i got hella fans, and my computers sidewall is off most of the time. its just wow that shuts it down and i definately dont think its heat because the computer will play Everquest, but wow just shuts my computer off, literally after about 15 minutes, my computer just turns completely off, no bsod, no restart just off.

The only thing I can think of is an automatic shutdown due to the CPU temperature.

There is not much else that would turn off the computer outside of a faulty PSU.

Yet if the problem is only specific to a particular program I would guess that program is over-heating the CPU and the motherboard/BIOS is shutting it down to prevent damage.

You might verify that your CPU can handle that game.

You also might undo the heatsink and clean then reapply a fresh thermal compound on the CPU.

I would suggest using a diagnostic tool with temperature logging to monitor the heat. Speedfan and RivaTuner are both excellent.

I play wow on my laptop, this started for me too about 5 to 4 months ago, when i dont play wow my comp stays on for hrs when i do it usually lasts 40 mins, what do i do??