Computer randomly shuts off

BrianCooper · Jul 15, 2014

My custom build desktop will randomly shut off while I'm playing a game, and even sometimes when I'm just on the internet. It happened twice yesterday, once while playing Civ 5 and once while playing Sims 3. I opened it up and felt that the video card was pretty hot. I have a case fan on the top of the backend of the computer blowing ait out of the case, and one fan on the side of the case also blowing air out. Using a NVIDEA GeForce 8800 card with a 430W power supply.
Also, right now with just the internet open the GPU temp is about 75 degrees Celsius

i7Baby · Jul 15, 2014

Is it getting hot? What's the cpu temp? Should be less than 35 on idle and 45C gaming.

Blow out he case - especially fans, filters and coolers

Jack up the cpu fan speed.

BrianCooper · Jul 15, 2014

i7Baby :

How do I find out the cpu temp and turn up the fans?

Thelps · Jul 15, 2014

One of the quickest ways to know if your CPU is running hot is boot your computer into the Motherboard BIOS at start up (usually by spamming the 'delete' key during the first 5 seconds after power-on).

Somewhere in your Motherboard's BIOS there will be a hardware temperature monitor that includes a readout for the CPU (check your MoBo's manual for the exact location of this reading).

Check what temperature your CPU is idling at, and whether that temperature is stable or increasing at a significant rate.

Keep in mind running games can add 10-25 degrees to this number, occasionally more.

Your CPU will auto shut down at anywhere between 75 and 90 degrees celsius (this is probably also controllable via a setting in your MoBo's BIOS).

If heat is what is causing your PC's shut down, you need to reinstall the heatsink and fan assembly as it is poorly installed.

Make sure to use thermal paste between the heatsink + fan and CPU and to apply that paste carefully and in the right density. There are many guides on how to do this online.

i7Baby · Jul 15, 2014

Install and use your motheboard's UEFI interface with bios.

BrianCooper · Jul 15, 2014

Thelps :

One of the quickest ways to know if your CPU is running hot is boot your computer into the Motherboard BIOS at start up (usually by spamming the 'delete' key during the first 5 seconds after power-on).

Somewhere in your Motherboard's BIOS there will be a hardware temperature monitor that includes a readout for the CPU (check your MoBo's manual for the exact location of this reading).

Check what temperature your CPU is idling at, and whether that temperature is stable or increasing at a significant rate.

Keep in mind running games can add 10-25 degrees to this number, occasionally more.

Your CPU will auto shut down at anywhere between 75 and 90 degrees celsius (this is probably also controllable via a setting in your MoBo's BIOS).

If heat is what is causing your PC's shut down, you need to reinstall the heatsink and fan assembly as it is poorly installed.

Make sure to use thermal paste between the heatsink + fan and CPU and to apply that paste carefully and in the right density. There are many guides on how to do this online.

The CPU temp in the bios Is 45 Celsius.

Thelps · Jul 15, 2014

BrianCooper :

It doesn't seem temperature is your problem. You can try RealTemp for an in-OS temeperature readout:

http://www.techpowerup.com/realtemp/

It is also possible you perhaps have loose connectors on your motherboard. Especially the CPU 8-pin connector and the motherboard's 20-pin/24-pin connector. It is worth checking all of these.

BrianCooper · Jul 15, 2014

Thelps :

BrianCooper :

It doesn't seem temperature is your problem. You can try RealTemp for an in-OS temeperature readout:

http://www.techpowerup.com/realtemp/

It is also possible you perhaps have loose connectors on your motherboard. Especially the CPU 8-pin connector and the motherboard's 20-pin/24-pin connector. It is worth checking all of these.

I tried installing that realtemp software and it said that my CPU is not supported, or something along those lines. Also, I checked inside the case and no cables are loose. Would it be a good idea to pick up an extra case fan? I'll be at best buy today

i7Baby · Jul 15, 2014

Is that 45C on idle or load. If idle, it's too high.

Should be less than 35 on idle and 45C gaming.

Blow out he case - especially fans, filters and coolers

Jack up the cpu fan speed.

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Computer randomly shuts off

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Thelps

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i7Baby

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BrianCooper

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Thelps

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i7Baby

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