PC Freezing, with some possible clues as to why

  KlPPER 04:37 06 Aug 2018

Hello, so for a while now my pc has been randomly freezing causing me to manually hard restart.

When the freeze occurs, my right monitor connected to my motherboard turns off and recently has been showing flickering rectangles. The left monitor which is plugged into my graphics card always stays on but is left frozen.

This is also accompanied by my mouse and keyboard turning off and then on again, followed by an occasional short static sound. I'm almost certain it's not a temperature reason as i've been monitoring them closely with no raised eyebrows.

Things I have done so far include:

  • Buy a new power supply √
  • Try a seperate graphics card √
  • Try with just one monitor √
  • Use just 1 ram stick √
  • Download drivers √
  • Reapply thermal paste
  • Cry myself to sleep

Specifications:

  • Intel i7 4770k
  • Gtx 1060 3GB (1 year old)
  • Novatec Bronze 500w (brand new)
  • 16GB Ripjaw DDR3 1600mhz ram (4x4)
  • Gigabyte Z97P-D3 1.1 rev

I'm having to write this on a Mac, so please help thanks!

  KlPPER 04:40 06 Aug 2018

Can't add the photo in the thread, here's a link to what the monitor looks like when the freeze happens.

Here

  Forum Editor 09:24 06 Aug 2018

What, if anything, triggers the freeze. If there's no obvious trigger, does the freeze happen after the same length of time on each occasion?

If you start the machine and just let it run (without doing anything) will the freeze still happen?

When you restart, does everything happen normally - no undue delays?

What happens if you swap the monitors around?

When you tried just one monitor, how was it connected, and did you try both monitors separately?

My initial thought is that there's a fault on the motherboard, but let's eliminate all other possibilities before we jump to any conclusions.

  KlPPER 15:04 06 Aug 2018

What, if anything, triggers the freeze. If there's no obvious trigger, does the freeze happen after the same length of time on each occasion?

It's completely random, I have noticed no patterns in the timing of it.

If you start the machine and just let it run (without doing anything) will the freeze still happen?

I believe so, I haven't tried not signing into Windows yet but it seems to crash whenever it wants. It could run fine for an hour or crash 3 times in the space of 10 minutes without me really doing anything.

When you restart, does everything happen normally - no undue delays?

I do get delays almost always when booting, I have had to hold the power button to turn off the PC then press it once to turn it back on. After this it can do a couple of things such as restart itself nce or twice or shut down completely but it usually boots to Windows pretty fast.

What happens if you swap the monitors around?

I'll try this now

When you tried just one monitor, how was it connected, and did you try both monitors separately?

I was using it for the BIOS, it was connected to my motherboard and the same flickering effect happened once during this time. i'll try the other monitor, could a single monitor be crashing my whole system?

My initial thought is that there's a fault on the motherboard, but let's eliminate all other possibilities before we jump to any conclusions.

I have the exact same motherboard to spare, although I have had issues with that one in the past too which I bought this one, would it be worth switching them?

Thanks for the help!

  Forum Editor 15:22 06 Aug 2018

"would it be worth switching them?"

It might be - let's see what happens when you change the monitors around, and when you try both monitors separately.

Also - boot the machine into Windows, and let it run without using it. See what happens then.

We're trying to find out what might trigger the event, or stop it. That way, we may be able to isolate the cause.

  KlPPER 16:40 06 Aug 2018

So I ran off just one monitor and left it on the desktop for about an hour before the screen just went black (without a no signal sign) and followed 5 seconds later with my pc shutting down.

I turned the PC back on and it went straight to Windows with no delays.

Here is what my setup looks like to give you an idea what i'm working with.

This is the monitor which was previous plugged into my GPU (the one that stayed on, but still frozen)

  KlPPER 16:58 06 Aug 2018

I'm starting to think it's either the motherboard or an SSD issue, there's not too much left. These monitors are only about 3 months old. This is also a reset version of windows with drivers installed.

I attempted a memtest but the PC would not boot off my USB, with the error 'reboot from a bootable device'

I'm currently trying the same monitor again, leaving it until it innevitably shuts down. if/when it does so, i'll try the monitor which has given me flickering colours.

  wee eddie 17:17 06 Aug 2018

Your posting at 16:40 is consistent with goi8ng into "Sleep" mode

  rdave13 18:39 06 Aug 2018

The FE has some excellent suggestions. My first thought was PSU not coping with the demand. Some PSU demand calculators you could try, google though It could be updated GPU drivers. Try using older Nvidia drivers, here . Just a couple of things more to to eliminate from a possible list.

  Forum Editor 18:40 06 Aug 2018

As wee eddie says, Windows will put your computer to sleep at some point - you can check this in Control Panel > power settings.

That obviously will not happen while you are using the machine, however, so that's not the problem.

  KlPPER 20:27 06 Aug 2018

I've disabled sleep now to avoid any confusion when testing.

My first thought was PSU not coping with the demand.

I calculated 409W, my PSU is a new 500W so i'm certain it's not that.

One thing I don't know if I should have mentioned, I recently moved my office into a log cabin down the garden. Could it be the power outlets down here causing the problem? it's not as shoddy as it sounds, I promise haha.

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