*UPDATE* My Pc will randomly turn off (No BSOD)

[Tripnator]

So over the past week my pretty new pc will Just randomly turn off. The Power supply makes a click noise then its gone. But all the motherboard lights stay on and you can switch it on straight away. Parts list below, any ideas im guessing its the PSU or a short. 

 

PCPartPicker part list: http://uk.pcpartpicker.com/p/DfHDMp

Price breakdown by merchant: http://uk.pcpartpicker.com/p/DfHDMp/by_merchant/

 

CPU: Intel Core i7-4790K 4.0GHz Quad-Core Processor  (£244.94 @ Aria PC) 

CPU Cooler: Corsair H100i 77.0 CFM Liquid CPU Cooler  (£84.12 @ Scan.co.uk) 

Motherboard: Asus MAXIMUS VII RANGER ATX LGA1150 Motherboard  (£125.20 @ Aria PC) 

Memory: G.Skill Ripjaws X Series 16GB (4 x 4GB) DDR3-1866 Memory  (£316.54 @ Amazon UK) 

Storage: Sandisk Extreme II 240GB 2.5" Solid State Drive  (£113.17 @ Amazon UK) 

Video Card: Gigabyte GeForce GTX 970 4GB WINDFORCE Video Card  (£285.56 @ Scan.co.uk) 

Case: Cooler Master HAF Stacker 935 ATX Full Tower Case  (£109.98 @ Scan.co.uk) 

Power Supply: Corsair 860W 80+ Platinum Certified Fully-Modular ATX Power Supply  (£154.79 @ Aria PC) 

Operating System: Microsoft Windows 8.1 (OEM) (64-bit)  (£72.35 @ Aria PC) 

Total: £1506.65

Prices include shipping, taxes, and discounts when available

Generated by PCPartPicker 2014-12-05 08:56 GMT+0000

 

*23rd December - Re installed windows 8.1 and only put the drivers i needed on but still turning off. 

 

So far :

 

Swapped PSU

Tested RAM

Re Installed Windows

 

Thanks For the help.

[xnoobftw]

Is anything overheating?

[Altecice]

If you are running any OC, stick it to stock

check temps

check voltages

[Tripnator]

Is anything overheating?

Nope all temps are low

 

If you are running any OC, stick it to stock

check temps

check voltages

nope its all running at stock too  

 

thanks for the replies 

[remilafo]

power issues hard to diagnose.. 

 

if all the temps are good, signs point to PSU..  Got another one laying around to test ?

[Tripnator]

power issues hard to diagnose.. 

 

if all the temps are good, signs point to PSU..  Got another one laying around to test ?

tested a new one and it still powers off

 

Also as i was routing around inside the case i knocked the ram a tiny bit and it switched off... so i re-seated it and it was fine for a day but now its doing it again. any ideas?

[SkimmyMcG]

tested a new one and it still powers off

 

Also as i was routing around inside the case i knocked the ram a tiny bit and it switched off... so i re-seated it and it was fine for a day but now its doing it again. any ideas?

Maybe try resetting the CMOS. Try testing all your RAM to make sure it's all good too.

[Tripnator]

Maybe try resetting the CMOS. Try testing all your RAM to make sure it's all good too.

thanks ill do that when im home. I kinda hope it is the RAM as everything else is new. 

[vlkn´]

don´t use the same sata power cable for ssd and cd drive/2nd hdd/ssd

[vlkn´]

That doesn't matter at all in a 1-rail PSU...

1. good for you

2. asus recommends it

[efex92]

I faced a same issue for 2 months even after i bought a new pc i used to happen. did try everything in my case... but the thing that solved the issue was getting a fresh install of windows 7(or whatever you are using.). If nothing works then try this.

[remilafo]

random computer shutoffs are hardly ever software related.  The last time i saw a software related shutoff was back in windows 95 and before that days when CTRL+ALT+DEL would be the keyboard combination for reset..

 

loose or even bad ram wouldn't cause a hard shutoff either, it would definitely give you a blue screen, no post or a hard reset but not a shutoff.  Signs are starting to point towards system board.

[Tripnator]

Ran memory test and installed windows 8.1 again still no luck. 

[Ryan Bellune]

Ran memory test and installed windows 8.1 again still no luck. 

 

I've encountered a similar issue whith a custom built that came into my shop a while ago. Random power-offs, good temps, and all hardware tested fine. We eventually found out that the customer had just screwed the motherboard directly onto the case without any standoffs, and it was causing a grounding issue. I would recommend re-building the whole thing, and making sure there isn't any contact between the board and the case.

[Tripnator]

I've encountered a similar issue whith a custom built that came into my shop a while ago. Random power-offs, good temps, and all hardware tested fine. We eventually found out that the customer had just screwed the motherboard directly onto the case without any standoffs, and it was causing a grounding issue. I would recommend re-building the whole thing, and making sure there isn't any contact between the board and the case.

yea i think thats my next step, i know its on stand offs but i suppose there might be some sneaky short on the mobo. 

[Ryan Bellune]

yea i think thats my next step, i know its on stand offs but i suppose there might be some sneaky short on the mobo. 

 

Best of luck! If this doesn't fix it, could you send some pictures of the computer? We may be a little bit more helpful if we can see what's going on 

[Tripnator]

Best of luck! If this doesn't fix it, could you send some pictures of the computer? We may be a little bit more helpful if we can see what's going on 

hey so i finally got some time to take it apart and re install everything, Same problem i am thinking of buying the same motherboard again and testing it, worst case ill just ebay it off because i need my pc to do work ( even though it turns off all the time) ill upload some pictures later.