Error code A2 on boot

[Red_TC]

 

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**System Configuration:**

- **Motherboard:** ASUS Maximus X Hero WiFi
- **CPU:** Intel Core i9-9900K
- **RAM:** 32GB Ripjaw RAM
- **PSU:** 850W
- **Storage:** Crucial 2TB NVME
- **Graphics Card:** ASUS 1080Ti

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**Build Overview:**

I'm in the process of selling a new build to a friend. I've successfully test-built everything listed, except for the Crucial NVMe. Initially, I used a 1TB Samsung 970 EVO for testing, booted into the BIOS, unplugged, and allowed it to sit until I had a proper cooler. Upon changing the cooler and adding the new Crucial NVMe drive, I encountered error code A2 on my motherboard.

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**Troubleshooting Steps:**

I've taken the following steps to address the issue:

1. Removed all unnecessary components for boot (GPU, fan headers, etc.).
2. Reinstalled the latest BIOS from ASUS.
3. Removed and replaced the CMOS battery.
4. Utilized the buttons on the rear for troubleshooting.

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**Additional Attempts:**

- Tested the previously mentioned 970 EVO drive, but encountered the same error code.
- Attempted different NVMe slots on the motherboard without success.

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Currently, despite multiple troubleshooting efforts, the issue persists. Any insights or recommendations would be greatly appreciated. I'm four potent edibles in while writing this, having exhausted my options and hoping for a helpful response. Thanks in advance!

[Whatisthis]

A2 means it can’t access a boot drive.

 

unplug the HDD, make sure the m2 is installed, insert your windows install usb and mash F8-F12 immediately on powering on. Should take you to the boot selection, then choose the usb and you should be good.

[Red_TC]

1 minute ago, Whatisthis said:

A2 means it can’t access a boot drive.

 

unplug the HDD, make sure the m2 is installed, insert your windows install usb and mash F8-F12 immediately on powering on. Should take you to the boot selection, then choose the usb and you should be good.

sorry, i only have an NVME* didnt mean to write HDD will try though

 

[Whatisthis]

8 minutes ago, Red_TC said:

sorry, i only have an NVME* didnt mean to write HDD will try though

 

If that doesn’t work, try an hdmi connection to the monitor if you are using display port. For whatever reason display port won’t work before you have an os installed so you won’t get a display out even though one exists and is available on the hdmi output:

[Red_TC]

no clue why 3 more posts spawned I went to add some photos and then this happened ???

[Robchil]

A2 isn't that for not finding boot device? ... it won't find a bootable device if nothing is installed on it... 

 

[Red_TC]

21 hours ago, Robchil said:

A2 isn't that for not finding boot device? ... it won't find a bootable device if nothing is installed on it... 

 

its an empty NVME and i tried with my windows installation media on a thumb drive with no luck

[Robchil]

3 hours ago, Red_TC said:

its an empty NVME and i tried with my windows installation media on a thumb drive with no luck

sure it won't changed after windows is installed and boot sector is found? 

[Whatisthis]

3 hours ago, Red_TC said:

its an empty NVME and i tried with my windows installation media on a thumb drive with no luck

Do what I said above. If you’re not getting a display, make sure you’re using an hdmi cable. Mash F8 - F12 immediately on boot, with your install usb plugged in.