Motherboard · high

How to fixPOST-CODE-A2

POST Code A2 - IDE Detect

What this error means

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.

Before you begin

Save open work and back up important files. Use instructions for your exact device and software version. If Windows cannot start, see the startup guide.

Work through these checks

0 of 4 complete
01Check all SATA data and power connection cables
  1. Check all SATA data and power connection cables
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

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02Unplug all storage drives and boot to test BIOS access
  1. Unplug all storage drives and boot to test BIOS access
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

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03Reset BIOS to stock settings using CMOS jumper
  1. Reset BIOS to stock settings using CMOS jumper
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

Browse related errors
04Change SATA controller mode to AHCI in BIOS settings
  1. Change SATA controller mode to AHCI in BIOS settings
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

Browse related errors

Possible 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)