NEED HELP: Crashing PC

Hardware Hub Build a PC
1

So I built my PC about 6-8 months ago, nothing has been changed or added since then.

For about 2-3 months I've been having a problem- randomly shutting down.

It can be doing something not very intensive eg.web browsing/youtube videos to something very intensive like BF4 gaming. It will even shut down while booting into windows.

I will admit my cable management is poor. So the first time it happened I simply unplugged 24pin and plugged it back in. And this works.

As you can imagine after a period of months this becomes frustrating.

Also as time has passed it is becoming more frequent- from maybe once every 24hrs of pc being on to once an hour (these are approximate not actual numbers).

To the point tonight where i couldnt actually log in (using windows) before it shut down again.

About 2 weeks ago, I thought it might be something to do with my OC and not enough volts or something. So i reduced my OC and volts. The problem is still here.

Earlier today when I was trying to fix the problem I went into UEFI BIOS and it was even crashing when I was in BIOS. 

When it does crash the green lights on MOBO and GPU stay on, as if they are still getting power.

Do you think this is MOBO,PSU,CPU?

I'm stuck, any suggestions would be greatly appreciated. 

Oh also I have not tried clear CMOS or anything yet.

 

Setup:

FX8350 @4.4 (was 4.6 but lowered due to problem)

ASUS 990FX REV 2.0

ASUS DCII HD7970 @1125Mhz (when gaming, otherwise stock everything)

Custom liquid cooling loop-just for CPU

Old HDD from old pre-built PC-years ago

Crucial M5 64GB-for boot drive

 

Many thanks,

Ben.

2

It may have something too do with that custom cooling loop of yours.

3

Ok, what may be wrong with it?

4

Have you drained it and refilled it yet.

5

No, but why would that cause my PC to shut down?

6

I'm not an expert on this topic at all, considering I've never done a custom loop before, but I think after awhile the dye in it can get gummed up(especially RED) but i would suggest you Google something about it. 

7

its either overheating or its your PSU.

8

Yeah, I've heard this as well-and it does seem to be true, but surely if there was a blockage or whatever my temps would sky-rocket and when I'm doing anything, including gaming my temps have never passed 46C. So im not sure if that is the issue...

9

if you are positive its not overheating is most likely the PSU, there are other things that could be causing it but this is the next cheapest most probable problem. 

10

it could be you motherboard

11

Im 100% positive its not overheating cause when I play games it doesn't overheat-i monitor my temps at all times on a second monitor. I have a corsair AX860, Im sure these have a 5yr warranty or something so hopefully I should be able to RMA it with corsair themselves.

12

i had the same problem with a msi motherboard (total bullshit) it just turned off, no warning. after i got my new motherboard i haven't had any problems with my pc. also what problems @ 4.6 overheating?

 

13

Whenever i say problem/problems I mean when it just crashes, sorry for not making it clear! And really!? Did you ever discover what the problem was or did you just RMA it?

14

is the system shutting down completly? or does it stays on and you get a black screen?

Wenn it completly shuts down, then there seem some kind of a power issue.

If you get a black screen, then there could be something with your GPU.

The AX860 psu you have got, is it a normal AX860 or is it an AX860i ? cause ive read somewhere that the older AX860i (which are not seasonic units) did had some issues.

15

i bricked it, but i had the same problems as you do. when you overclock do you boost the northbridge volt? my cpu crashes at 4.8 randomly

16

The issue that you talk about, is indeed an issue with the AM3+ boards from msi. if you wanne overclock passed 4.8 stable, the bios just does not allow you to bump up the voltage enough. Thats a bios issue.

But ive never heard about this issue with Asus 990FX boards. I think there is something diffrent going on here.

17

Yes I think I upped the northbridge volt slightly, I cannot remember right now... I think I could have pushed mine to 4.8 but I was happy at 4.6.

And no it completely shuts down, powers off and will not turn back on (using power switch on the case) until I have taken out 24pin and put it back in. And just to clarify it doesnt have windows shutting down or whatever its like someone has pulled the plug out of the wall or something.

And it is basic AX860 (non i) 

18

i think i wrote that a bit wrong, i had a msi motherboard. i have a gigabyte motherboard now and it is running my A10 6800k @ 4.7Ghz on a air cooler, dosen't go over 67 C

19

hmm okay, seems like a power issue.  the AX860 is the newer unit, and is a seasonic. normaly that should be allright.

Do you have the same problems wenn you run, everything on stock speeds? just restore everything to factory defaults..

20

Yeah, power is what I thought was the issue to, running everything at stock was the next thing i was going to try tomorrow- as it is 11:30pm in the UK right now. So I will be checking back in tomorrow afternoon and updating what happened when at stock speeds.