2 motherboards not POSTing

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Hi all, this feels like a very odd one.

First mobo, ASUS maximus VII gene stopped posting with code 00 on the built in LED. Right before that I had loaded my 4.7ghz profile from default. (I had been having random hard resets (no event logged) and MEMORY_MANAGEMENT BSODs).

I decided the mobo was goosed, and rebuilt with a gigabyte za-z97mx gaming 5. Loaded up windows np, but have had a battle all day with drivers - particularly sata. Removed irst, intel me, and a bunch of other drivers in a bid to start fresh from a mobo point of view, rebooted and now it's in exactly the same position as the asus!

Won't post at all. All the fans come on, pump, leds etc, but nothing comes out of any display - I've tried all ports on the gfx card as well as vga and hdmi on the mobo.

In this state, a manual hard reset via the power button usually resets instantly, but I have to hold it in for the usual 4-5 secs.

Detaching hard disks makes no difference - it will run the fans and leds forever. Detaching CPU power causes it to loop after a few seconds. Removing RAM causes it to instantly loop.

At this stage I'm out of ways to diagnose! I would've blamed the cpu had the second board not behaved normally for a while.

Does anyone have any ideas?! TIA.
 
does it have a bios switch on the board? flick to backup bios position and try

have you tested with a spare psu aswell?
 
Run the basic parts needed to boot and get an image, single Ram stick, use onboard display, one boot drive.

Then also do stuff like update the boards bios and the SSD as I know samsung released firmware fixs (for speed) for some of them.
 
wazza300 said:
does it have a bios switch on the board? flick to backup bios position and try

have you tested with a spare psu aswell?
Click to expand...

The Asus did but pressing it did nothing. I've cleared CMOS on both with jumpers and the battery. Unfortunately I dont have another psu to test.

stulid said:
Run the basic parts needed to boot and get an image, single Ram stick, use onboard display, one boot drive.

Then also do stuff like update the boards bios and the SSD as I know samsung released firmware fixs (for speed) for some of them.
Click to expand...

I've just done the first part as you said. Only vga attached, mouse + kb, gfx card removed and still the same.

There doesn't seem to be anyway to get it to recognise external media. I've had a couple of bootable USBs plugged in, but get no feed back. Blank screens from no input the whole time.
 
try a longer cmos clear,battery left out 10 minutes,also hold in front panel power button once pc is disconnected from the mains to discharge the board

all I can think of
 
wazza300 said:
try a longer cmos clear,battery left out 10 minutes,also hold in front panel power button once pc is disconnected from the mains to discharge the board

all I can think of
Click to expand...
Yeah did about 20 while I did Sunday stuff, made sure it got a nice long breather. I always drain excess power when flicking the psu switch too.

stulid said:
All power connectors in fully (24+8pin connectors on that board).
Click to expand...

Absolutely. Disconnected everything on the board and reconnected.

What should happen Iif there's a problem with the cpu? Reboot loop? Boot failure tones? Is it possible for the system to appear active with a dud cpu?
 
That sounds like iffy PSU.
You managed to get one good run out of it when it was cold on the new MB.

I know it sounds stupid but I have seen similar before.

You need to test another PSU to rule that out of the equation as at the moment, you don't have any clear path what you have ruled out is the problem (Other than its not the mobo it seems!)
 
Tried with a cheapy psu i just bought (from here) and still the same.

I suppose that narrows it down to cpu or ram. What is the cheapest outlay from here to test this further? ARe there any bargain bin sticks of ram/z97 cpus I can buy?
 
I had a broke CPU cos I was messing with hsf a new CPU and it was OK. So if urs ain't posting check the CPU and its pins etc for marks etc.
 
Sounds like the cpu to me. Take it out and run the board. If it gives you the same error then yeah it's dead. Take the cooler off, clean the cpu and run the board. With a finger on the IHS if it doesn't warm up quickly its dead. Just keep the PSU switch ready to be switched off as they can get hot pretty quickly.

Try all ram in each slot one at a time. Remove the memory and see if the code changes.
 
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Wouldn't taking it out would be the same as removing the 4+4 power cable? It reboot loops in that instance.
 
I had the "00" code on a Asus RVE the CPU was RMA'd first as that what the assistant thought was the problem. When it arrived put back into same board, same issue "00". RMA'd that board, now no issue
 
I had the "00" problem with an Asus RVE. At first the assistant (at OC) thought it was the CPU that was RMA'd and when I received the new one put it into the same board. Again I faced the "00" problem. That board was RMA'd and changed. Now I have no problem.
(New board and CPU thanks OC)

Sorry for the double post.
 
It was a single stick of RAM.

I could have sworn I tried single sticks before... facepalm.

Cheers all

Both sticks work as long as I swap them out into different slots between boots
 
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Spoke too soon. It's still quite fubar.

I can get it to boot with one stick. The next time it boots I have to change the memory slot.

Lots of issues installing chipset software while in Windows, and it hangs at restarting requiring a hard reset. Once Windows actually shut down but the hardware kept running.

Feels like this could be anything now.
 
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Lots of issues with the gigabyte board but it's running, so swapped back out to the asus - still 00 and nothing happening.

Either the asus is done or is just more sensitive than the gigabyte, but I would imagine it would provide an proper Q code if that was the case. Replacement coming tomorrow.

As for the gigabyte - when taking the cpu out, it kinda slipped over the pins a little. I squinted at the pins and it appears that there may be 1 slightly bent out of place :(
 
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