Question Asus Crosshair VIII Hero 02 Error Code. No POST

Sep 5, 2019
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Hello, I'm building a new PC and have the following components:
Ryzen 9 3900x
Asus Crosshair VIII Hero(No WiFi)
PNY GeForce RTX 2080 Ti
HyperX Predator DDR4 RGB 16GB kit 3200MHz
EVGA SuperNOVA 750 G3, 80 Plus Gold 750W

I keep getting a 02 Q error code and the computer will not POST. This is my second motherboard of the same model. I've tried resetting the CMOS, using the BIOS flashback feature(Yes I downloaded the right version and used the renamer to make the CAP file name be CH8) re-seating the CPU, unplugging and plugging back in all the power connectors, nothing works. My last resort is trying to get a boot kit from AMD or..exchange this one for yet another motherboard, but I just wanted to ask around here to see if I'm missing something?

Thanks in advance for any info!
 
Reactions: Zathmi
Sep 8, 2019
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Hello, I'm building a new PC and have the following components:
Ryzen 9 3900x
Asus Crosshair VIII Hero(No WiFi)
PNY GeForce RTX 2080 Ti
HyperX Predator DDR4 RGB 16GB kit 3200MHz
EVGA SuperNOVA 750 G3, 80 Plus Gold 750W

I keep getting a 02 Q error code and the computer will not POST. This is my second motherboard of the same model. I've tried resetting the CMOS, using the BIOS flashback feature(Yes I downloaded the right version and used the renamer to make the CAP file name be CH8) re-seating the CPU, unplugging and plugging back in all the power connectors, nothing works. My last resort is trying to get a boot kit from AMD or..exchange this one for yet another motherboard, but I just wanted to ask around here to see if I'm missing something?

Thanks in advance for any info!
I'm having the same issue.
  • Ryzen 9 3900x
  • Asus Crosshair VIII Formula
  • GIGABYTE GeForce RTX 2080 Super GAMING OC 8G
  • 2x: CORSAIR Vengeance LPX 32GB DDR4 3000 (PC4 24000)
  • NZXT Kraken X62 280mm
  • Intel 660p Series M.2 2280 2TB PCI-Express 3.0 x4 3D NAND Internal (SSD)
  • Samsung 860 EVO 2.5" SATA III 2TB SSD
  • CORSAIR HXi Series HX1200i 1200W 80 PLUS PLATINUM power source
New system build, first boot went perfectly. Went through BIOS and Windows 10 setup without a hitch. All hardware was detected and running normally. Standards speeds, no OCing. Temps all satisfactory and constant. Once up and online updated the BIOS, Windows, and all of the drivers to the newest versions. Went through a number of the standard soft restarts that come with a new build setup, no problems. Got to the point where it was time for bed so I shut down completely and unplugged the power and all other cables so there were no unexpected updates or power issues overnight. The next day I plugged everything back in and attempted the first cold boot since setup, which stuck in the post. Everything seems to be getting power and functioning. The display on the motherboard goes through the CPU and VGA post okay but when it gets to the HDD post it hangs on "HDD Code: 02" then gives the "Code: 02 Post Error" and just stops. Does not finish microcode loading and does not proceed to BIOS/system boot.

Pic: View: https://imgur.com/a/p7FOYgh


Video:
View: https://youtu.be/JqGOZsNVKn8


Troubleshooting:
  • Reflashed BIOS to both versions available on ASUS support (Version 0702 & Version 0803).
  • Tried: CMOS reset, slow mode reboot, Safe BIOS mode reboot
  • Tried all configurations for the LN2 Mode Jumper
  • Reseated everything except the processor (don't currently have more thermal paste but the system booted fine the first time so issues in the CPU are unlikely).
  • Tried minimal setup with just processor, 1 stick of RAM, Vid card, and 1 storage device (tried each SSD, a magnetic HDD, a USB drive, and no storage at all, all separately).
  • Have checked all components (except CPU) individually on another system. No issues.
My only guess at this point is maybe an error in the newer BIOS versions. Does anyone know if the factory BIOS is different from the versions available for download?
 
Sep 22, 2019
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Also experiencing this kind of issues, on a ASUS ROG Crosshair VIII Formula. When i need to restart the pc, it just keeps on trying to post until it after 5-6 attempts stops at "HDD Code: 02" and "Code: 02 Post Error". If i clear CMOS and removes the power cord, and then wait 1 minut. if lucky it boots the bios into safemode and boot just fine. I have one time experienced same issue on a cold boot with the Code: 02 Post Error, but a simple restart on the case fixes it.
 
Sep 8, 2019
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Update: Received a new board from Newegg. Same setup, only difference is that I didn't update the BIOS. Don't know if that is actually what did it but the new one is running great. Haven't had any issues.
 

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