PC Boots and then doesnt.

Dempsey22 · 12 Jan 2019 at 21:55

Hi all,

Build a storage system recently to run unraid.

Spec:
Asus q87m-e
8Gb DDR3
5 x 3TB WD Reds
SSD
BeQuiet 650w PowerZone

I've never had it running successfully. I had Unraid running and when I powered it down it would not power back up at all. I could leave it for awhile powered off and it might work again. I thought it was the PSU being faulty as the motherboard LED would light up when PSU is on, but hitting the power does absolutely NOTHING.

I swapped a 1000w PSU into it today and booted perfectly, shut it down and repeated the process. Was all good. Then put side panel back on tidied up some cabling , put it away and went to power it up. NOTHING again.

So far I tried

Clearing CMOS
Reseating cooler/CPU
1 stick of RAM.
Built it outside of case
etc.

Im beginning to think faulty motherboard?

Any help would be appreciated before I throw more cash at it.

Dempsey22 · 13 Jan 2019 at 02:48

Believe Ive solved this. Found a post on a random forum from 2011.

There's a jumper supposed to be on CLEAR_RTC pins. There was none on it from day 1 and manual says it has to be there or else it will cause boot issues.

So far so good.

EsaT · 13 Jan 2019 at 21:10

Also BIOS battery might be dead.
Motherboard is certainly old enough that it can happen anytime.
And new battery certainly isn't expensive thing to try.

Dempsey22 · 14 Jan 2019 at 22:15

EsaT said:
Also BIOS battery might be dead.
Motherboard is certainly old enough that it can happen anytime.
And new battery certainly isn't expensive thing to try.

Sorry I left that out. I replaced the battery recently too hoping that would fix it.

It was the CLEAR_RTC jumper that was causing the issue. It didn't have one when it should have. System is working flawlessly now.