Posting Problems (Not a new build)

[DebatED Nothing]

So, I've been running this PC for several years now, and the only change I've made all that time is replacing my HD 7850 with a GTX 770, and adding 2 hard drives, so no, it's not just a recent issue to do with a new component.

 

In the last two days, both times I have come to turn my PC on, it has failed several times before booting, sometimes posting, more often not even making it that far (never playing the post beep, never showing anything on screen). However, there was never an error beep, only either no beep at all or the post beep, after which it may or may not reach windows. Once it's booted up properly, it's completely stable and can run games as normal. Today, it failed twice but then on the third attempt played a sequence of several short beeps, which according to my MOBO's manual, means a power error. Is my PSU dying? How come it seemingly takes some time to warm up but once it's going it's stable?

 

This is my current build: http://pcpartpicker.com/p/cgDYsY

 

Any help would be appreciated, thanks!

[paradigm249]

one way to find out is try with spare parts like a spare PSU if you have.

[DebatED Nothing]

one way to find out is try with spare parts like a spare PSU if you have.

I have this, don't know if I'd trust it with my PC:

http://www.amazon.co.uk/gp/product/B00642F8AU?psc=1&redirect=true&ref_=oh_aui_detailpage_o05_s00

[paradigm249]

I have this, don't know if I'd trust it with my PC:

http://www.amazon.co.uk/gp/product/B00642F8AU?psc=1&redirect=true&ref_=oh_aui_detailpage_o05_s00

dunno if it works. most PSU are very similer. but if you want to trouble shoot the problem its a way that i know so far.

you can try to reinstall the OS too. it could make a difference. but i dunno

 

up to you to decide

[DebatED Nothing]

Does anyone have any suggestions as to what I can assume isn't the issue? I don't think it can be OS or disk related, because that shouldn't affect booting at all. I know that it could be PSU related, but I don't really have any way to test that at the moment at least. I've undone the single change I made to the environment the PC is in (the addition of another extension cord to my 6 way power splitter to let me use my soldering iron and hot glue gun easier) and that's not fixed it. The problem is it's a bitch to test, as it only fails to boot every now and then, and seems to reliably boot fine after the first correct boot, and then won't fail until it's turned off at the plug and left for a while.

 

The impression I get from its behaviour is that it's "warming up" and until it's "warmed up" it can't boot correctly, could there be something wrong with my PSU that causes this behaviour? I've emailed corsair's tech support, so maybe they'll send me a new one as I'm well within my 7 year warranty.

[0x1e]

Does anyone have any suggestions as to what I can assume isn't the issue? I don't think it can be OS or disk related, because that shouldn't affect booting at all. I know that it could be PSU related, but I don't really have any way to test that at the moment at least. I've undone the single change I made to the environment the PC is in (the addition of another extension cord to my 6 way power splitter to let me use my soldering iron and hot glue gun easier) and that's not fixed it. The problem is it's a bitch to test, as it only fails to boot every now and then, and seems to reliably boot fine after the first correct boot, and then won't fail until it's turned off at the plug and left for a while.

 

The impression I get from its behaviour is that it's "warming up" and until it's "warmed up" it can't boot correctly, could there be something wrong with my PSU that causes this behaviour? I've emailed corsair's tech support, so maybe they'll send me a new one as I'm well within my 7 year warranty.

I have this same problem with my Corsair AX860i.

However I'm not sure if it's the PSU or something else. I suspect it's my motherboard.

I've always put it down to capacitors charging (however that's a complete guess). If I don't turn it off from the wall then I'll post no problem, however when I don't use the machine then I flip the switch on the wall. 

 

I will only get this problem 1 - 4 times a month and the weather seems to effect it. My symtoms are the same as yours. No error code, nothing and then it will power off and back on after a few seconds. However then once it begins to boot and my sound card clicks (normal) then it will fail to boot again. Force a restart and all will be good again for a few weeks.

 

I am leaning more towards the motherboard as I used to have my CPU overclocked to 5.1Ghz for many months in the past now I use 4.9 (5ghz for benching) and think this has taken it's toll on the motherboard.

[DebatED Nothing]

However I'm not sure if it's the PSU or something else. I suspect it's my motherboard.

I've always put it down to capacitors charging (however that's a complete guess). If I don't turn it off from the wall then I'll post no problem, however when I don't use the machine then I flip the switch on the wall. 

That's an idea, I've not actually tested leaving the PC off but on at the wall switch for a long time (as whenever it's day I leave it in sleep, and I turn it off at the switch because otherwise my mouse stays illuminated). This might help somewhat.

[DebatED Nothing]

So, it seems to have fixed itself. I borrowed a friend's PC to test my system on his PSU and his on mine, and it's all fixed. I guess that means it was a loose connection somewhere?