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Chip overheating due to new graphics card

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  • Chip
  • Computers
  • Graphics Cards
  • Motherboards
Last response: in Motherboards
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July 17, 2013 3:28:35 AM

Hi there,
I hope you can help me with the following problem:

My HP desktop computer has worked well for a couple of years, then I decide to change the monitor, which - as it turned out - required a new graphics card and the installation of a larger power supply (500 W).

All great for a while, but on hot days it doesn't seem to be able to cope, and my PC switches off suddenly with the typical system recovery problems following.

I've installed PC wizard to check temperatures, but it seems that the chipset doesn't have a sensor, however, running the PC with the case open, all fans inside are working, touching it the chip is still very hot, and that right from startup of the PC.
Now I've put a standard table fan down in front of it to make keep temperatures down and be sure it doesn't switch off during work, but not really a very elegant solution :-/

My question is, since I'm not a computer geek, will I solve the problem simply installing a more powerful fan? - or am I just pushing the problem further on to some other component that then needs changing..?

System configuration:
PC model: HP G5460uk
Motherborad: Foxconn 2ABF
Chipset: Intel H61
Processor: Intel Core i3 2100 CPU @ 3100 MHz
Physical memory RAM: 4096 MB
Graphics card: AMD Radeon HD 7700 Series
Hard disk: Western Digital WD2502ABYS-01B7A0
Hard disk Western Digital WD500AVDS-73U7B1
DVD-Rom HP DVD RW AD-7251H5
Monitor: Samsung S27B971 - 24"
OS: Windows 7 Home Premium SP1 (64 bit)

Thanks in advance

Liz

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a b U Graphics card
July 17, 2013 4:08:56 AM

If your new video card is the same style as mine, it vents it's heat inside the case. Some styles vent out the back of the case.
The former can and will increase cpu temps. Which combined with the recent heatwave in my part of the world, is why I have 3 new case fans being delivered today..:) 

Does the table fan trick bring all your temps down to normal? If so, then perhaps one or two extra case fans might be all you need.
Or just better ones that flow more air if you don't have spots in the case to install extra fans.
If the table fan trick still has your cpu temps a little higher than normal, perhaps a better cpu cooler combined with more/better case fans, will be where you need to go.

Also, did you use a can of air to clean the dust off everything recently? Sounds simple, but sometimes something that simple helps a lot.
Make sure you use canned air recommended for cleaning the inside of your pc, and not an air compressor hose or anything like that. Too high pressure and too much moisture in the air from a compressor.

Another possible solution is using a software based fan profile for the cpu fan, to make it spin faster, sooner. A lot of prebuilt pc's like hp are set up to be quiet, and keep the fan speeds low to achieve this. It may be possible for you to manually set the cpu fan to a slightly higher speed and get enough airflow.

I would try that first, since it is free.
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July 17, 2013 5:52:19 AM


exroofer said:
If your new video card is the same style as mine, it vents it's heat inside the case. Some styles vent out the back of the case.
The former can and will increase cpu temps. Which combined with the recent heatwave in my part of the world, is why I have 3 new case fans being delivered today..:) 

Does the table fan trick bring all your temps down to normal? If so, then perhaps one or two extra case fans might be all you need.

Another possible solution is using a software based fan profile for the cpu fan, to make it spin faster, sooner. A lot of prebuilt pc's like hp are set up to be quiet, and keep the fan speeds low to achieve this. It may be possible for you to manually set the cpu fan to a slightly higher speed and get enough airflow.

I would try that first, since it is free.


Dear Exroofer,
Yes, the graphics card vents inside the case itself. I then have two fans below the card, venting out of the back and on the side (the part I have removed) of the case.
Unfortunately, the open case and the table fan doesn't seem to be enough, since my PC just switched off again...despite the office AC on :( 

I will try the cleaning and the fan speed control anyway, can you recommend any SW ?

Thanks
Liz
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a b U Graphics card
July 17, 2013 6:15:26 AM

Hmmm. Repeated shutdowns from heat are a bad thing. And this is inside an air conditioned office?
I use the Asus software for my motherboard to adjust fan speeds.
Not sure exactly what will work with your system, so a little Google and Tom's search is in your future.
Sorry about that.

HW monitor is a very good program for monitoring all your temps. Perhaps double check that it is the cpu causing the shutdown, or vid card getting too warm. Also the default shut down temp in the bios may be set very low from the factory, and your temps are not actually that high.

7700 series cards do not run all that hot, at least according to the specs I have read. Seems like this is a combination of heat sources and lack of cooling.

I'm guessing since you are using a big fan to help, the computer is not tucked in one of those little nooks that office desks have? Those confined spaces have pretty much zero airflow.

Hope you can find at least a temporary fix quickly. Office PC going down is not really an option here..:) 

Not trying to scare you, but since it is your office pc and most likely has important stuff on it, perhaps backing up your data somewhere else while you sort this out is a good idea. You are probably ahead of me there, just thought I'd mention it.
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July 21, 2013 11:11:25 PM

Hi,

Excuse me if I post twice, my first answer seemed to vanish somewhere..

Thank you for your suggestions, it turned out that the problem wasn't chip overheating after all, but the new power supply being defect !
Have run for 2 days now without shutdown (and that with the case closed).

The chip still gets awfully hot, so had a small dissipator glued on, no room for a proper one, but perhaps better than nothing.

I hope I can finally enjoy my beautiful monitor without stress :-)

Thanks again,
Rgds
Liz
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a b U Graphics card
a b V Motherboard
July 22, 2013 3:51:55 PM

Thanks, psu are a popular problem. Your first post suggested a overheating issue to be investigated. Good luck with the new, newer PSU.:) 
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