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Random shutdowns while idling in BIOS. Bad power supply?

Last response: in Systems
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October 12, 2011 1:47:26 AM

I am building a new machine, reusing the CPU from my old one.

The relevant specs are:
Intel Core 2 Quad Q6600 Kentsfield 2.4GHz 2 x 4MB L2 Cache LGA 775 Quad-Core Processor BX80562Q6600
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

MSI G41M-P26 LGA 775 Intel G41 Micro ATX Intel Motherboard
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

G.SKILL Ripjaws Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10666)
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

PC Power and Cooling Silencer Mk II PPCMK2S650 650W ATX12V v2.2 / EPS12V SLI Ready CrossFire Ready 80 PLUS SILVER Certified Active PFC Power Supply
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

EVGA SuperClocked 01G-P3-1461-KR GeForce GTX 560 (Fermi) 1GB 256-bit GDDR5 PCI Express 2.0 x16
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

===========

The build went smoothly. It booted to windows just fine (using an old disk that had it already installed), but then it shut off after about 10 minutes of use. I have to toggle the power supply switch on & off and wait a few minutes before it will turn on again.

So I started taking out hardware to just the bare essentials. One stick of ram (tried both), onboard video, & disk.
It boots to BIOS, all the hardware seems to be recognized, the CPU idles around 30C and the power supply voltages hover reasonably around 3, 5 & 12. Still, the machine will only last 10-15 minutes just sitting at the BIOS screen.

I'm not sure what could be going wrong. I don't think its a heating issue because of the BIOS readings & the CPU heatsink is cold to the touch after it shuts down. The power supply reads ok in the BIOS at least, but I know those readings aren't 100% reliable. I'm thinking I'll RMA the power supply and see what happens, but I'd like to get some advice/opinions before I go through the trouble.

Any ideas?

Thanks!

a c 116 ) Power supply
October 23, 2011 3:12:11 AM

If resetting the power supply switch brings it back to life, it sure sounds like that's the culprit. Sounds like a thermal overload in the PSU is cooling and resetting.
October 23, 2011 3:26:43 AM

do you have a voltage meter to test it your self and see if it is within the ranges of acceptability for each of the 24 pin outs? if it is it might be another part is over heating which is what it sounds like what it is to me. it might be the power supply which is over heating or the RAM and/or another part also. check for auto OCing as that might do it also. with auto OCing it isn't always good as some parts are not ment to be OCed and when forced they cause your computer to randomly restart
December 15, 2011 12:20:05 AM

Did you ever figure this out. I have the same board and its doing the exact same thing....
:bounce:  :bounce: 

twall92 said:
I am building a new machine, reusing the CPU from my old one.

The relevant specs are:
Intel Core 2 Quad Q6600 Kentsfield 2.4GHz 2 x 4MB L2 Cache LGA 775 Quad-Core Processor BX80562Q6600
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

MSI G41M-P26 LGA 775 Intel G41 Micro ATX Intel Motherboard
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

G.SKILL Ripjaws Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10666)
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

PC Power and Cooling Silencer Mk II PPCMK2S650 650W ATX12V v2.2 / EPS12V SLI Ready CrossFire Ready 80 PLUS SILVER Certified Active PFC Power Supply
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

EVGA SuperClocked 01G-P3-1461-KR GeForce GTX 560 (Fermi) 1GB 256-bit GDDR5 PCI Express 2.0 x16
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

===========

The build went smoothly. It booted to windows just fine (using an old disk that had it already installed), but then it shut off after about 10 minutes of use. I have to toggle the power supply switch on & off and wait a few minutes before it will turn on again.

So I started taking out hardware to just the bare essentials. One stick of ram (tried both), onboard video, & disk.
It boots to BIOS, all the hardware seems to be recognized, the CPU idles around 30C and the power supply voltages hover reasonably around 3, 5 & 12. Still, the machine will only last 10-15 minutes just sitting at the BIOS screen.

I'm not sure what could be going wrong. I don't think its a heating issue because of the BIOS readings & the CPU heatsink is cold to the touch after it shuts down. The power supply reads ok in the BIOS at least, but I know those readings aren't 100% reliable. I'm thinking I'll RMA the power supply and see what happens, but I'd like to get some advice/opinions before I go through the trouble.

Any ideas?

Thanks!

!