PC shuts down during some games, runs OK during others.

thenns · Oct 5, 2013

I've recently had this happen to me. I'll be playing a game, for example Splinter Cell: Blacklist, Crysis 2, Dota 2, and my computer will just shut down. When I turn it back on I get no windows errors, and everything works as normal.

However, if I'm playing Path of Exile, Diablo 3, League of Legneds or Starcraft 2, I can play for hours on end with no problems at all.

Here is my setup.

AMD Phenom II x4 955 3.2Ghz
12GB DDR3 RAM
nForce 750 motherboard
GTX 760 superclocked
samsung 128GB ssd
WD 500GB HDD
650W corsair PSU

I was running a GTX465 until a couple weeks ago, and I had the same problems. I also started noticing this a couple days after I installed the new SSD, I don't know if that has anything to do with the problem.

I had a similar problem when I bought build the computer 3 years ago, I RMA'd the mobo and got a new one and it's been fine until now. Back then I had the same problem but with all games.

I'm not really sure where to go from here and hopefully some one will be able to help.

Thanks!

tiny voices · Oct 5, 2013

What are your CPU and GPU temps under load?

thenns · Oct 5, 2013

What are your CPU and GPU temps under load?

I don't know about the CPU, but GPU will go from 51C to 75C

tiny voices · Oct 5, 2013

Thats fine. the CPu is what I am concerned with.

thenns · Oct 5, 2013

For the GPU I was using a widget. How can I find out the CPU temperature?

tiny voices · Oct 5, 2013

A program called Core Temp.

RealTemp is also a great option.

thenns · Oct 5, 2013

I've been playing Crysis 2 for about an hour. It says 91C

tiny voices · Oct 5, 2013

Thats the problem. That CPU is only supposed to get to 62 degrees. You are ruining the CPU. Check to see if the CPU fan is spinning and if the cooler is correctly mounted.

thenns · Oct 5, 2013

The fan is spinning. It is mounted correctly. Idle, the CPU is at 42C. What do you recommend? Resitting the fan and applying thermal paste? Aftermarket fan?

tiny voices · Oct 5, 2013

The CPU should be idling around 32 and not get hotter than 62.

Try to CORRECTLY re-apply the thermal paste, using the pea method.

See if this helps.

thenns · Oct 5, 2013

Thank you. I will try that and let you know.

Thanks so much for your help. I was ready to buy a new motherboard.

tiny voices · Oct 5, 2013

Always glad to be able to help! let me know how it goes.

thenns · Oct 5, 2013

I took off the fan and cleaned off the old thermal paste. I applied new paste using the pea method, made sure the clamps were tight and the fan seated correctly. I blew out all the dust from the fan, as well as the whole case.
On idle I was getting 42C and around 86C on full load. I guess I either did something wrong, or there is something else I must do.

Any ideas?

tiny voices · Oct 5, 2013

How old is your CPU? Is it overclocked? 86 is better but still far too high.

thenns · Oct 5, 2013

I bought it in November of 2010, so it is almost 3 years old. It is not overclocked, I don't think. It is clocked at 3.2Ghz. Maybe I could underclock it?

Is there a reason why in the last two weeks this would start to happen? Is the CPU just old and dying?

tiny voices · Oct 5, 2013

It is unlikely that it is old or dying. Does your case have decent airflow? (one intake and one exhaust fan)

thenns · Oct 5, 2013

Yes. It actually has four fans. It is a full ATX case. I also made sure to tidy up all the cables to make sure they are not interfering with anything.

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