[SOLVED] Asus X299-A Prime II (CPU Error Red LED)

Aug 15, 2020
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Hello!

I am trying to build a new build with the next;
i9 10940x
Asus Rog Strix 2080ti
Samsung 970 Evo plus 2tb m.2
Corsair Vengeance RGB Pro 32GB 4266MHZ (4x8gb)
Dark Power Pro 1000w
Asus X299-A Prime II

When I have build everything correct in its place and am trying to boot it the Q-Led indicator on the motherboard is going to blink red on the CPU so it wouldnt boot up.

I have tried to reassemble the CPU, RAM, everything but it didnt work.

So I had tried it with another PSU and it didnt also not work.

I ordered another CPU to check if that was the problem but no chance.

I ordered the same motherboard again to check if this one was faulty and guess what, it didnt also work.

So what can the problem be? Are my components not compatible with the motherboard? Or has this motherboard in general have problems?

I hope that someone can helps me out with this!

Greetings of the day!
 
Solution
Looks like your PSU only has a single 8 pin (4+4) EPS connector (And you want to make SURE you are using the correct one. Don't mistakenly try to use the 6+2 PCI/PEG auxiliary power connectors meant for the graphics card in place of the auxiliary CPU power connections which are keyed differently) and your board likely requires that both 8 pin connectors be used.

Your board has two 8 pin EPS sockets along the upper top right edge for the CPU supplemental power connections, so if you don't have those connected that is likely your problem.

Otherwise, everything else including the CPU support on that motherboard, should be fine. Make sure you've connected the required PCI/PEG power connections to the graphics card as well.

It would be a...
Looks like your PSU only has a single 8 pin (4+4) EPS connector (And you want to make SURE you are using the correct one. Don't mistakenly try to use the 6+2 PCI/PEG auxiliary power connectors meant for the graphics card in place of the auxiliary CPU power connections which are keyed differently) and your board likely requires that both 8 pin connectors be used.

Your board has two 8 pin EPS sockets along the upper top right edge for the CPU supplemental power connections, so if you don't have those connected that is likely your problem.

Otherwise, everything else including the CPU support on that motherboard, should be fine. Make sure you've connected the required PCI/PEG power connections to the graphics card as well.

It would be a good idea to triple check everything listed here:



If that fails to solve anything then I'd remove the motherboard from the case and bench test it as follows:


 
Solution
Aug 15, 2020
4
0
10
Looks like your PSU only has a single 8 pin (4+4) EPS connector (And you want to make SURE you are using the correct one. Don't mistakenly try to use the 6+2 PCI/PEG auxiliary power connectors meant for the graphics card in place of the auxiliary CPU power connections which are keyed differently) and your board likely requires that both 8 pin connectors be used.

Your board has two 8 pin EPS sockets along the upper top right edge for the CPU supplemental power connections, so if you don't have those connected that is likely your problem.

Otherwise, everything else including the CPU support on that motherboard, should be fine. Make sure you've connected the required PCI/PEG power connections to the graphics card as well.

It would be a good idea to triple check everything listed here:



If that fails to solve anything then I'd remove the motherboard from the case and bench test it as follows:


Thank you, I have 2x 8pin (P8) connected to the CPU power connector but that gives the same failure.

What I dont get is that the CPU is getting hot so it gets definitely power.

I have did evrything from the first post but nothing worked, I didnt did the motherboard testing yet.

I have ordered another PSU to try out if that is the problem because the PSU's are tried are two of the same. I will receive it today.

If this also will not work I will do the motherboard test or change to another motherboard.
 
Aug 15, 2020
4
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HOW do you know the CPU is getting hot?

What CPU cooler are you using?
I use the NZXT Z63, do you think that it gives the error because the cooler is not plugged in correctly? Nothing is plugged into the motherboard but only to the cooler it self.


After it gives the error I also tried to boot it without the cooler so I have felt the heat coming from the CPU.
 
Aug 15, 2020
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HOW do you know the CPU is getting hot?

What CPU cooler are you using?
Now with the cooler plugged in again, it doesnt give any RED CPU error. But the boot light on the same line is coloring white and there is no output on the monitor.

The QCode is giving a D7 (D7. No Console Input Devices are found. )
 
Do you have a keyboard and mouse connected to the motherboard?

Do you have drives attached to the motherboard?

Have you tried doing a hard reset of the CMOS settings as follows?

BIOS Hard Reset procedure

Power off the unit, switch the PSU off and unplug the PSU cord from either the wall or the power supply.

Remove the motherboard CMOS battery for five minutes. In some cases it may be necessary to remove the graphics card to access the CMOS battery.

During that five minutes, press the power button on the case, continuously, for 30 seconds. After the five minutes is up, reinstall the CMOS battery making sure to insert it with the correct side up just as it came out.

If you had to remove the graphics card you can now reinstall it, but remember to reconnect your power cables if there were any attached to it as well as your display cable.

Now, plug the power supply cable back in, switch the PSU back on and power up the system. It should display the POST screen and the options to enter CMOS/BIOS setup. Enter the bios setup program and reconfigure the boot settings for either the Windows boot manager or for legacy systems, the drive your OS is installed on if necessary.

Save settings and exit. If the system will POST and boot then you can move forward from there including going back into the bios and configuring any other custom settings you may need to configure such as Memory XMP, A-XMP or D.O.C.P profile settings, custom fan profile settings or other specific settings you may have previously had configured that were wiped out by resetting the CMOS.

In some cases it may be necessary when you go into the BIOS after a reset, to load the Optimal default or Default values and then save settings, to actually get the hardware tables to reset in the boot manager.

It is probably also worth mentioning that for anything that might require an attempt to DO a hard reset in the first place, IF the problem is related to a lack of video signal, it is a GOOD IDEA to try a different type of display output as many systems will not work properly initially for some reason with displayport configurations. It is worth trying HDMI if you are having no display or lack of visual ability to enter the BIOS, or no signal messages.

Trying a different monitor as well, if possible, is also a good idea if there is a lack of display. It happens.