Help problem solving PC that won't boot please

Drewb said:
OK these are at relative idle, just a few browser windows open.
Realtemp shows max of 29C
GPUz shows steady 50C. However the GPU fan is showing at 0 RPM is that right?
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Temps are fine (980Ti idles warm). The fan should kick in when under load and temps creep up - may be worth checking with a game before you switch off. 50C is probably right on the cusp of the fans starting to spin depending in curve...

Drewb said:
I will check load temps later today, after your earlier comment I am loathe to stress too much at the moment.
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Yes, no point risking losing work while your computer is working.

Drewb said:
Thanks I will try reseating all you suggest when I power down at the end of day.
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Worth a shot.

And clear the BIOS - save a profile first if you don't know what your settings are. Then load it back up again once your back in the BIOS after reset.
 
Load System and check temps/fan before power off.
Then reseat, reset BIOS. Thanks so much for your time and help.
Better go and do something useful now.
 
Furmark ran for nearly 20 mins with GPU fan speed never rising above 48% (1600 rpm) and GPU temps 76-77C. At the time CPU temps never higher than 45C. I have seen updated the graphics card drivers via Windows hardware management.

What I hadn't noticed this morning is the mobo has a LED display, it was hidden behind the graphics card due to the angle I was looking at it. Currently it reads AA, will check this when I power off a bit later to reseat all I can except CPU.
 
GPU temps are fine.

You need to run a dedicated a CPU stress test like prime 95 or Cinebench to check it's load temps - i'll search out some links.
 
Thanks for the link I have run Prime95 for 5 mins, max CPU temp reached 67C but most of the time it was 64 or 65.
I also did a windows restart to see if it would restart and to watch the mobo LED. All started OK. Time to try a power down now I think.
 
All temps are great.

I would try a simple power down. Leave for 10 minutes and then power on. It could be that your cable wobbbling may have fixed it.

If not proceed with the re-seating...
 
Before I read your reply, I powered down, left it 5 secs and powered back up, all OK and normal.
Will power down for 10 mins now.
If that is OK I am calling it a day and have set time aside in the morning to reseat if it fails to power up.
Once again thank you very much for your time and help.
 
It has powered up again 1st attempt after 10 mins off.
I can't see how my wobbling the connections can have done it though as it didn't want to boot for quite a few attempts afterwards.
I will worry about it tomorrow, it's power off for the night now.
 
Drewb said:
I can't see how my wobbling the connections can have done it though as it didn't want to boot for quite a few attempts afterwards.
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Ah, was not aware of that.

You may have a cold boot issue then (not ambient room temp related) - you'll know for sure tomorrow - in which case re-seat cables/GPU tomorrow if you have problems.

I'll look out for your post as working from home again tomorrow.
 
As the case side was still off this morning I reseated the easy bits I could reach before power on, that is 2 of the 4 memory sticks, power to mobo and graphics card. The sata cables and power to the drives had been disconnected and thus reseated yesterday.
It powered up first time :)
Thanks for your help, if it reoccurs I will post again here. At lest with the stress tests I know the system is still good when running anyway :)
 
Drewb said:
It powered up first time :)
Thanks for your help, if it reoccurs I will post again here. At lest with the stress tests I know the system is still good when running anyway :)
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No problem - hopefully it will behave itself from now on.
 
Sadly the problem hasn't gone away. Out of for boot ups from cold, 3 of 4 worked first time, the last took 6 attempts then booted.
This morning was more like the first time on Monday, it took many attempts over a 30 min period. You can tell when it is going to boot because the fans don't cut out and a few seconds later you see the bios screen. All failed attempts the fans cut out before they get up to speed. (I say fans but it is also the graphics card lighting up etc)
Could this be anything to do with the case power switch or wiring from switch to mobo? I don't know how these soft switches work.
The good news is I can power down any time today to have a look.
Just a thought, there is a boot switch on the mobo isn't there, if it won't start again should I try that?
 
Ballz - but half expected this may be the case.

Drewb said:
EVGA GeForce GTX 980Ti Superclocked+ ACX 2.0+ 6144MB GDDR5 PCI-Express Graphics Card
Intel i7-5820K 3.30GHz (Haswell-E) Socket LGA2011-V3 Processor
Asus X99-AUSB3.1 Intel X99 (Socket 2011) DDR4 ATX Motherboard
EVGA SuperNova P2 1000W '80 Plus Platinum' Modular Power Supply
Samsung 500GB 850 EVO SSD 2.5" SATA 6Gbps 32 Layer 3D V-NAND Solid State Drive
Corsair Vengeance 16GB (4x4GB) DDR4 PC4-19200C14 2400MHz Quad Channel Kit - Black
Fractal Design Define R4 Midi Tower Case - Black
Windows 10 64 bit.
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I would test your your memory as the next step.
 
Drewb said:
Could this be anything to do with the case power switch or wiring from switch to mobo? I don't know how these soft switches work.
The good news is I can power down any time today to have a look.
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I would check the front panel header connections - did you re-seat these with other cables?

Also, have you got the latest BIOS installed? And do you have a USB HUB connected?
 
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