New build randomly turning off/on

[TexpharmD]

I just put together the following build:

-ASUS Xonar Essence STX Virtual 7.1 Channels PCI Express x1 Interface 124 dB SNR / Headphone AMP Card

-RAZER DeathAdder Black 5 Buttons 1 x Wheel USB Wired Precision Optical Gaming Mouse - 3.5G Infrared Sensor

-Logitech G15 2-Tone USB Wired Standard Gaming Keyboard

-Crucial RealSSD C300 CTFDDAC128MAG-1G1 2.5" 128GB SATA III MLC Internal Solid State Drive (SSD)

-CORSAIR CMPSU-850TX 850W ATX12V 2.2 / EPS12V 2.91 SLI Ready CrossFire Ready Active PFC Power Supply

-(2)GIGABYTE GV-N460OC-1GI GeForce GTX 460 (Fermi) 1GB 256-bit GDDR5 PCI Express 2.0 x16 HDCP Ready SLI Support Video Card

-GIGABYTE GA-X58A-UD3R LGA 1366 Intel X58 SATA 6Gb/s USB 3.0 ATX Intel Motherboard

-COOLER MASTER HAF 922 RC-922M-KKN1-GP Black Steel + Plastic and Mesh Bezel ATX Mid Tower Computer Case

-COOLER MASTER Hyper 212 Plus

-LG Black Blu-ray Disc Combo SATA Model CH10LS20

-SAMSUNG Spinpoint F3 HD103SJ 1TB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive

-G.SKILL PI Series 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800)

-Intel Core i7-930 Bloomfield 2.8GHz LGA 1366 130W Quad-Core Desktop Processor

Everything started out fine....installed Win7 64 Home Premium...the only trouble is it didn't appear that Win7 recognized the SSD as an SSD. I had it installed on the Sata III channel. So eventually I will need to work out that.....

The problem that is driving me nuts is the pc began to randomly turn off and then turn back on. It's happened in windows, it's happened when I was in the BIOS settings, when the PC was rebooting.....sometimes an hour between, sometimes within 5 minutes of each other....no rhyme or reason. Any suggestions?

 

[aford10]

Might be some flaky RAM. Try running memtest.

Heat could also cause it. Check the temps in the BIOS. Also, download real temp or speedfan, and check the temps while in windows.

 

[TexpharmD]

Temps in Everest as follows:

Temperatures:
Motherboard 38 °C (100 °F)
CPU 52 °C (126 °F)
CPU #1 / Core #1 37 °C (99 °F)
CPU #1 / Core #2 39 °C (102 °F)
CPU #1 / Core #3 39 °C (102 °F)
CPU #1 / Core #4 36 °C (97 °F)
Aux 35 °C (95 °F)
GPU1: GPU 38 °C (100 °F)
GPU2: GPU 34 °C (93 °F)

Voltage Values:
CPU Core 0.93 V
+2.5 V 1.52 V
+3.3 V 3.38 V
+5 V 5.00 V
+12 V 0.83 V
+5 V Standby 3.63 V
VBAT Battery 3.12 V

Downloaded memtest and will run tonight.....only had 3 to 4 restarts today, but still that's still more than what I want!

 

[TexpharmD]

And the fun only gets better! Checked on memtest before going to bed and the pc must have rebooted once as the wall time did not match the time since I started. But it did make it through one complete cycle with no errors. So I decided to let it run all night and see what happened. Well, this morning there was no signal to the monitor. Hit the reset button on the pc....nothing. Turned it off and turned it back on.....no post. Turned it back off....and now it will not even turn on! There is some power as my mouse lights up when the psu is turned on.....so I am thinking that it's a power supply problem or a flaky motherboard that just died. Any other thoughts?

 

[aford10]

You've got some good quality hardware, but that doesn't mean it's not a defective part.

Try removing the side of the case. Point a household box fan at it, and see if it's still restarting on you.

If it doesn't even want to power on, my thoughts would be a loose power connection, bad PSU, or possibly motherboard.

 

[TexpharmD]

I did buy 2 additional case fans..one is on the side of the case blowing inwards. I think I can get my hands on a 750W Corsair...will try it and see what happens.

 

[TexpharmD]

I ended up replacing both the motherboard and the PSU and upgraded my cooler to a Megahalems rev.B. I've now run for 24 hours without any problems, so hopefully problem solved!

 

[aford10]

Good deal. Thanks for the update!