My PC shuts down due to high temperatures

[TheMarkedOne7]

Arranging some things inside the case, I noticed that the temperatures of CPU and GPU were very high (between 70 and 90). As he proceeded to go off in minutes ...

The cooler the GPU (HD 6850) works slowly and noisily, while the CPU fan seems to spin correctly, but touches 99 degrees celsius.

My PC are: i5 2400, P8H67-M PRO, XFX HD 6850, 1x4GB DDR3 1333Mhz, Seagate Barracuda 7200.12 1TB and a cheap Sentey case.

I opened the side panel of the case and still the temperature is very high in the GPU and the CPU, I do not know if something's wrong with the BIOS settings, voltage, or the like, these are the data that I get from HW Monitor:

What could be happening?

 

[JOHNN93]

your cpu temps are fine the only problem is your gpu it reachers 99 witch is high and it shuts down because it is overheating.if you have waranty its best to return it if not you should clean the fan wth isopropyl alchohol and reaply thermal grease.this will avoid waranty so check for waranty first.

 

[Someone Somewhere]

Both the [strike]CPU[/strike] and GPU are too hot. Try getting a vacuum cleaner on low (hold the fans still or you might spin them too fast) and clean the heatsinks.

Also, check all the case fans are spinning. And that the fan(s) at the front and side are intakes and rear/top exaust.

EDIT: Nope, the MB may be misreporting the CPU Tin temp. CPU temps are fine, though still a little high for idle.

 

[DeathAndPain]

I do not believe in the guilt of any fans other that CPU/GPU, because his case temperatures are fine.

But he says the CPU cooler works slowly and noisily. That is where I would start. The fan most obviously needs to be replaced.

CPU is also running too hot, hitting an upper threshold and throttling itself down to prevent overheating. This may happen under Prime95, but should not occur under normal working conditions. I suggest replacing the CPU cooler with something decent and applying a good thermal grease in the process.

Note that opening the case usually does not improve cooling, because that way you eliminate the natural air flow through your case which is driven by your fans and thermics. As the consequence, the air comes to a near standstill over your components, and motionless air is among the best thermal insulators in existence - precisely the opposite of what you want at your hot parts. Work on the CPU/GPU coolers as indicated above and close your case.

Also make sure no cables obstruct the air flow through your case, at least not more than what is inevitable.

 

[JOHNN93]

I do not believe in the guilt of any fans other that CPU/GPU, because his case temperatures are fine.

But he says the CPU cooler works slowly and noisily. That is where I would start. The fan most obviously needs to be replaced.

CPU is also running too hot, hitting an upper threshold and throttling itself down to prevent overheating. This may happen under Prime95, but should not occur under normal working conditions. I suggest replacing the CPU cooler with something decent and applying a good thermal grease in the process.

Note that opening the case usually does not improve cooling, because that way you eliminate the natural air flow through your case which is driven by your fans and thermics. As the consequence, the air comes to a near standstill over your components, and motionless air is among the best thermal insulators in existence - precisely the opposite of what you want at your hot parts. Work on the CPU/GPU coolers as indicated above and close your case.

Also make sure no cables obstruct the air flow through your case, at least not more than what is inevitable.

his gpu fan is slow and noisy not cpu

 

[DeathAndPain]

I stand corrected. It was only a typo though, as my subsequent paragraph reveals.

 

[photonboy]

First, I would run MEMTEST to verify no DDR3 memory issues www.memtest.org

It's really hard to say where your problem is:

1) Run Prime95 to stress your CPU. If your system crashes it's probably the CPU cooling is insufficient. (If it crashes while gaming it COULD be the graphics card too which is why you should run a CPU-specific test).

2) If Prime95 doesn't crash your system then it may be your graphics card that's the problem since you describe the fan as noisy.

3) Have a FRONT and a TOP case fan as well (front for intake) and if possible control them via the motherboard.

I think, as mentioned, you should reinstall the CPU heatsink. If you have a stock one, get something like the HYPER 212 PLUS which can be found for $35 or cheaper: http://www.newegg.com/Product/Product.aspx?Item=N82E16835103099

 

[DeathAndPain]

First, I would run MEMTEST to verify no DDR3 memory issues www.memtest.org

Memory issues lead to crashes and bluescreens, but do not shutdown the system

It's really hard to say where your problem is:

Yes. When his system shuts down with high GPU and low case temperatures, his graphics chip hits extreme temperatures and the fan on the graphics chip only runs slowly, making loud noises, then it is really hard to say where the problem is… come on, how blind are you?

 

[TheMarkedOne7]

I stress my CPU with AIDA 64 and come to 70º, i think it works fine, because don't shut down.

The problem is with gaming and video playing, so, is the GPU?

 

[RobCrezz]

It certainly looks like the GPU is overheating. If you feel up to it, remove the heatsink and fan from the graphics card. Clean the thermal paste off the GPU and heatsink and apply some new (only a small pea sized), then refit the heatstink and fan, then put the graphics card back in the system and try again.

While its off, obviously clean out any dust from it too.

 

[DeathAndPain]

Won't help much as long as he does not replace the defective GPU fan. A fan that rotates slowly and noisily on an overheating chip has its bearings running dry and therefore needs to be replaced.

 

[Baralis]

Check to make sure your GPU fans are spinning correctly. I have had GPU fans go bad in the past and I had to replace them. If they appear to be running correctly I would take your GPU out and clean the fan blades and blow out the heat sink.