• Competitor rules

    Please remember that any mention of competitors, hinting at competitors or offering to provide details of competitors will result in an account suspension. The full rules can be found under the 'Terms and Rules' link in the bottom right corner of your screen. Just don't mention competitors in any way, shape or form and you'll be OK.

14900k problem

Is the MB reacting properly, light flashing and then going out?
Are you doing the flashback with no other components connected to the MB?
 
Last edited:
Have you tried doing the bios flashback several times?
Yup tried about 8 times.
Is the MB reacting properly, light flashing and then going out?
Are you doing the flashback with no other components connected to the MB?
Yup flashes 3 times then flashes for a good 4-6 mins.

What PSU are you using?
I’m using a Corsair 850x but have tried with a rog 1000w as well.


Everything lights up except ram and error leds. Io, keyboard, mouse all light up.
 
Well my 12700k doesn’t boot in it either so I can’t only think it’s the board. I might ask OCUK about swapping it or something, see what they say.

Good luck with that ☺️

Whilst it might not have helped, I do wish that all motherboards had a dual BIOS facility.
Perhaps even socketted BIOS chips, that helped me years ago with a DFI failed update, and the hot swapping of BIOS chips
 
cpu temperature as 81C but if you expand it to see the individual core temps, 6 of them are at aroun

Well my 12700k doesn’t boot in it either so I can’t only think it’s the board. I might ask OCUK about swapping it or something, see what they say.


I read all the posts, so I gather it's the BIOS update you tried that might be the issue, if so not a lot you can do apart from usual ie reflashing, take CMOS battery out etc , however if the board is dead due to BIOS update then only solution will be a new board.

You need to get the motherboard checked by a third party to make sure it's dead then go on from there.

Think I would be tempted to get a new motherboard to try.
 
I read all the posts, so I gather it's the BIOS update you tried that might be the issue, if so not a lot you can do apart from usual ie reflashing, take CMOS battery out etc , however if the board is dead due to BIOS update then only solution will be a new board.

You need to get the motherboard checked by a third party to make sure it's dead then go on from there.

Think I would be tempted to get a new motherboard to try.

What id the chance of having a pair of faulty CPU’s? Chances are it’s either the new chip or flash that has killed the board.
 
Well the board worked after I flashed it, as I ran some cinebench before I removed the old cpu so I could compare as you do. Unplugged everything cable wise and installed the new cpu as I’ve done many times before. Went to boot up after installing and nothing happened.
 
I have the same motherboard and I went from a 12700k to a 14900k.

Before I put the 14900k in I updated to the latest bios and reset the bios to stock settings then put the 14900k in and luckily it worked.

From the pic it looks like you only have 1 of the cpu power connectors in? If you haven’t got both connectors plugged in try that?
 
Damn, that it seems you now have to deal with a dead system and you have 14900k that still can't be tested. Guessing that also has a limited easy window of returns. What will you do about the 14900k...?
 
I looked at your pic and had a looked at user manual, it appeared in the pic you plugged 2 ATX power connectors to A: ATX_12V_1 and C: ATX_12V_PWR so it seemed you forget to plugged in 3rd power connector to B: ATX_12V_2. You will need to plug in three power connectors to ports marked A, B and C accorded to manual motherboard diagram.
 
I have the same motherboard and I went from a 12700k to a 14900k.

Before I put the 14900k in I updated to the latest bios and reset the bios to stock settings then put the 14900k in and luckily it worked.

From the pic it looks like you only have 1 of the cpu power connectors in? If you haven’t got both connectors plugged in try that?

This, it's worth plugging in both CPU 12V (8PIN) power cables.
 
I looked at your pic and had a looked at user manual, it appeared in the pic you plugged 2 ATX power connectors to A: ATX_12V_1 and C: ATX_12V_PWR so it seemed you forget to plugged in 3rd power connector to B: ATX_12V_2. You will need to plug in three power connectors to ports marked A, B and C accorded to manual motherboard diagram.
The extra 8 pin isn’t needed, only when overclocking.

Damn, that it seems you now have to deal with a dead system and you have 14900k that still can't be tested. Guessing that also has a limited easy window of returns. What will you do about the 14900k...?

I think the only option is to rma the motherboard and see what they say. I did purchase it in 2021 tho, hopefully they can sort something out (not OCUK). I’ve got a z790 coming tomorrow so I can at least test the cpus and go from there, will try the 12700k first.
 
The extra 8 pin isn’t needed, only when overclocking.



I think the only option is to rma the motherboard and see what they say. I did purchase it in 2021 tho, hopefully they can sort something out (not OCUK). I’ve got a z790 coming tomorrow so I can at least test the cpus and go from there, will try the 12700k first.
Considering you can't boot, worth trying with both connected. Perhaps the new BIOS update made it require both cables to be connected? Won't cost you anything to try ;)
 
Back
Top Bottom