I've got either a failed cpu or mobo, is there anyway of knowing which without spending ££?

David_VI · 31 Mar 2020 at 16:34

Hi all,

I've got a Gigabyte Z97X-sli and i5 4690k.
The system wouldn't boot after I loaded a random old profile on the bios (curiosity).

The fans fire up then it goes off, and back on and off. I've tried removing battery, removing everything but cpu. Even totally gutted the system and breadboarding it.

I did a post in the motherboard forum but no responses...
I'm not really after diagnostic help now, (i believe I tried everything, even shorting bios chip to get the backup bios to take over).

I'm just wondering if there's a way of knowing what has failed as I would have sold the parts or made another build for a family member.

Is the only option to buy a cheap 1150 mobo or cheap cpu?

Or could anyone send me a spare mobo/cpu, or I send my cpu? A bit of an ask I know.

It's just doing my head in, especially at the current time. I ordered a new Ryzen upgrade last week anyhow, amazingly before this happened but no sign of it arriving till late week.
I can't stand not knowing what's dead, especially with all this time on my hands.

Cheers

David_VI · 31 Mar 2020 at 16:44

Brizzles said:
Have you tried shorting the cmos pins with the battery in ?

2 pins above the front header panel , bottom right on board

Yeah tried that, sometimes the monitor gets a dvi signal but then goes off again. I did once see a flashing cursor but the system went off before anything happened. Couldn't replicate it though.

Sometimes it stayed on for longer, like 8 secs rather than 3

David_VI · 31 Mar 2020 at 20:50

EsaT said:
Get new battery.
That one is old enough to possibly cause problems.

Would a flat battery cause problems like that? I didn't think a battery did more than keep the biro in memory

David_VI · 1 Apr 2020 at 00:28

Blue160 said:
The problem starting after a bios update would likely point to the board. Board failure especially during bios update is way more common than cpu failure.

Board update could be loading a profile right? I have used profiles many times with overclocking. Seems wild that this one time it somehow killed the board. Especially the same week I ordered it's replacement!

David_VI · 1 Apr 2020 at 15:37

mikey6 said:
Can you connect a speaker to the MB, to check for any error beeps to give you a pointer towards the failure?

I don't have a speaker, I suppose i could get one as that's rather inexpensive