Computer shut down suddenly.. now struggles to boot up a lot of the time?

Ammo1337

Ammo1337

Ammo1337

Associate
Joined
5 May 2016
Posts
23
As per title. One day my pc randomly powered down. No physical signs of damage but I cleared the cmos just in case and now my desktop struggles with powering up and often just shuts off by itself. Asus anti-surge is activating whenever this happens it seems.

First time it happened I watch just watching twitch, now it'll do it whenever it feels like, even when idling.

Seems like a dying PSU but is there anything I can do to test it apart from trying it on a whole other system as I have no other spares lying around? I'd like to be sure before I buy another PSU.

Afraid of updating the bios or anything as who knows when it decides to shut off again..

System specs:

i7 4790k (stock)
asus z97 pro gamer mb
970GTX MSI 4GB (factory oc'd)
EVGA Supernova 650G1 psu
2x8gb 1600mhz hyperx ram
1x 256gb ssd and 1x2tb hdd

Also my temps are of course quite low so it's not an overheating issue. Any help would be appreaciated thanks

EDIT: Just found out I'm still within warranty for my PSU, but would like to absolutely be certain it is the culprit before I send it off.
 
Last edited:
Had a similar Asus anti-surge issue on a H81 board. Tested with a known working PSU and it was the same. The Asus Bios was reporting 10v on the +5v rail on both PSUs. Disabled Asus anti-surge inside the Bios and all good for over a year (brother's PC). Reading up about it, broken sensors on some Asus boards are quite common, and that combined with their particular anti-surge implementation, can cause such issues.

Not saying this is the problem in your case. Just to look into it.
 
Last edited:
Nothing to do with this issue but if you haven't done so already - pop a new CR2032 lithium coin battery into the motherboard to prevent CMOS memory issues from developing. It's good maintenance for Z87/Z97 and other boards from that time frame at this point.
 
labcoattech said:
You could try reducing the load on the PSU by removing the graphics card, 2TB HDD and see if that helps you to diagnose the issue.
Click to expand...

Removed the GPU and it booted up straight away no problem. I haven't tried leaving it on for a while though.

Danny75 said:
Had a similar Asus anti-surge issue on a H81 board. Tested with a known working PSU and it was the same. The Asus Bios was reporting 10v on the +5v rail on both PSUs. Disabled Asus anti-surge inside the Bios and all good for over a year (brother's PC). Reading up about it, broken sensors on some Asus boards are quite common, and that combined with their particular anti-surge implementation, can cause such issues.

Not saying this is the problem in your case. Just to look into it.
Click to expand...

I'd find it strange that suddenly the sensors would act up after about 5 years but hey ho maybe you're right, I'm not going to be disabling it just yet though as it seems to be a bit odd in my case.

After a long time of not turning on my PC, it won't even try to start on. However if I unplug it or switch off from the mains for about 10 seconds and retry it will start up for a moment, then shut down, then again, repeating with each start up a little longer than the last until I can actually finally boot up into my PC. Has anybody experienced or heard of anything like this?

Each time I get the whole anti-surge enabled thing, but I doubt it's a sensory issue if it happens in such a fashion.
 
Ammo1337 said:
Removed the GPU and it booted up straight away no problem. I haven't tried leaving it on for a while though.



I'd find it strange that suddenly the sensors would act up after about 5 years but hey ho maybe you're right, I'm not going to be disabling it just yet though as it seems to be a bit odd in my case.

After a long time of not turning on my PC, it won't even try to start on. However if I unplug it or switch off from the mains for about 10 seconds and retry it will start up for a moment, then shut down, then again, repeating with each start up a little longer than the last until I can actually finally boot up into my PC. Has anybody experienced or heard of anything like this?

Each time I get the whole anti-surge enabled thing, but I doubt it's a sensory issue if it happens in such a fashion.
Click to expand...

It's the psu. Replace that bad boy. 99.9% that this resolves the issue.
 
Ammo1337 said:
I've got the same feeling. I'm going to unplug the GPU and let it sit for a few hours before just to check the stability.
Time to test out EVGA customer service and RMA :D
Click to expand...

Yea I would RMA it for sure. It's all the classic symptoms of a PSU failure so id be surprised if it was anything else. Shame you haven't got a spare to test with as EVGA normally make some good stuff. Personally with PSU's after all these years messing about I really only buy seasonic supplies for my rigs these days. I must have used every supply out there and nothing says quality like a seasonic supply. I still remember the situation around the mid 1990's where there were a huge number of very questionable supplies out there and people used to bring machines to me and id open it up and you just knew that if the power supply was gold in colour that the thing had blown up. Anybody remember the name of them supplies?
 
Vince said:
Yea I would RMA it for sure. It's all the classic symptoms of a PSU failure so id be surprised if it was anything else. Shame you haven't got a spare to test with as EVGA normally make some good stuff. Personally with PSU's after all these years messing about I really only buy seasonic supplies for my rigs these days. I must have used every supply out there and nothing says quality like a seasonic supply. I still remember the situation around the mid 1990's where there were a huge number of very questionable supplies out there and people used to bring machines to me and id open it up and you just knew that if the power supply was gold in colour that the thing had blown up. Anybody remember the name of them supplies?
Click to expand...

This is my first problem with a PSU, then again I've only had 3 builds. Previously it was my 8800gtx's frying themselves.. :D
I had some crappy brand PSU before, it made a bit of a noise but went well for about 7 years before I just stopped using it.

Hoping for a new one entirely in this case!
 
Ammo1337 said:
I'd find it strange that suddenly the sensors would act up after about 5 years
Click to expand...

That's the common theme. Few years fine then they act up. Not strange at all.


Ammo1337 said:
I'm not going to be disabling it just yet though as it seems to be a bit odd in my case.
Click to expand...

Up to you. It's just a very easy thing to troubleshoot before RMA'ing a PSU. There's probably tens of thousands of Asus owners running with anti surge disabled.
 
Danny75 said:
That's the common theme. Few years fine then they act up. Not strange at all.




Up to you. It's just a very easy thing to troubleshoot before RMA'ing a PSU. There's probably tens of thousands of Asus owners running with anti surge disabled.
Click to expand...

@Ammo1337 I agree that you should do this first. Clearly Danny75 knows there are sensor issues with the board and that doesn't surprise me tbh. Simple things first before rma. :)
 
Vince said:
@Ammo1337 I agree that you should do this first. Clearly Danny75 knows there are sensor issues with the board and that doesn't surprise me tbh. Simple things first before rma. :)
Click to expand...
Danny75 said:
That's the common theme. Few years fine then they act up. Not strange at all.




Up to you. It's just a very easy thing to troubleshoot before RMA'ing a PSU. There's probably tens of thousands of Asus owners running with anti surge disabled.
Click to expand...

Just booted up successfully after many attempts of getting into the BIOS. Disabled the anti-surge and i'm on my desktop again. If I have any more problems during this week I will be RMAing.

Will be reporting back in a week, if you do not hear back from me assume I died from a catastrophic explosion involving my PSU :D
 
Ammo1337 said:
Just booted up successfully after many attempts of getting into the BIOS. Disabled the anti-surge and i'm on my desktop again. If I have any more problems during this week I will be RMAing.

Will be reporting back in a week, if you do not hear back from me assume I died from a catastrophic explosion involving my PSU :D
Click to expand...


No worries, tell your family to send the bill to @Plec and to be quick before he splashes the money for the hardware replacement and the funeral on a X570 Extreme. :)

If you can get into the BIOS again, I'd check the voltage readings for each of the PSU rails. If something is ridiculously off there, then more likelihood the sensors are wonky. If they are only a little bit off, then maybe accurate and it's the PSU.
 
Danny75 said:
No worries, tell your family to send the bill to @Plec and to be quick before he splashes the money for the hardware replacement and the funeral on a X570 Extreme. :)
Click to expand...
Yep, all claims inspected and dealt with on first come first served basis - the only minor fiscal caveat is that there's a £800, non-refundable inspection charge, which by pure coincidence is a ball-park price of a Gigabyte x570 Xtreme.
 
Danny75 said:
No worries, tell your family to send the bill to @Plec and to be quick before he splashes the money for the hardware replacement and the funeral on a X570 Extreme. :)

If you can get into the BIOS again, I'd check the voltage readings for each of the PSU rails. If something is ridiculously off there, then more likelihood the sensors are wonky. If they are only a little bit off, then maybe accurate and it's the PSU.
Click to expand...

Well it powered down twice since I've turned the anti-surge off, and now won't power on at all. I also swapped the cmos battery just to be sure but that didn't do anything. Now I'm bricked until evga get back to me :D
 
darael said:
Posting because I also had problems with exactly the same motherboard. Like you, it just wouldn't turn on in the end. I sent it back to OcUK and they returned to Asus for repair. At which time I then opted for a partial refund and used this to upgrade.

You can read my little adventure here: https://forums.overclockers.co.uk/threads/black-screen-sometimes-when-posting.18783535/
Click to expand...

Thanks man. It turned out to be the PSU for me. £9 shipping for a new PSU with a 10 year warranty again, can't complain apart from the fact that it's the exact same model but I think that's just being cheeky :D.

Sounds like you had a far bigger mess than me!
 
You must log in or register to reply here.
Back
Top Bottom