POST Code A2 - IDE Detect

What is POST-CODE-A2?

POST Code A2 - IDE Detect ranks as a high-severity motherboard issue in our database. Motherboard debug code A2 indicates that the BIOS is attempting to detect and initialize SATA/IDE storage drives but has failed or encountered a timeout. Most commonly caused by bad SSD/HDD data cables, dead drive controllers, or loose power connections. This can also stem from corrupted boot partitions or MBR/GPT configurations. Follow the steps below to fix it.

Common Causes

• Bad or loose SATA data/power connection cables
• Failing controller chip on SSD/HDD storage drive
• Corrupted boot partitions or MBR/GPT configurations
• Incorrect BIOS storage controller settings (legacy IDE mode)

Step-by-Step Fix Guide

• 1
  Check all SATA data and power connection cables

  Check all SATA data and power connection cables is the first thing worth trying, since it resolves POST-CODE-A2 for most affected systems.

• 2
  Unplug all storage drives and boot to test BIOS access

  If the fault persists, continue with the next steps, which account for less common storage drive boot instability causes.

• 3
  Reset BIOS to stock settings using CMOS jumper

  "Reset BIOS to stock settings using CMOS jumper" is worth trying when incorrect BIOS storage controller settings (legacy IDE mode) turns out to be the culprit.

• 4
  Change SATA controller mode to AHCI in BIOS settings

  "Change SATA controller mode to AHCI in BIOS settings" targets bad or loose SATA data/power connection cables, one of the documented causes of POST-CODE-A2.

Commands & Diagnostics

Frequently Asked Questions