Here’s how to fix PC error code 99

The debug 99 code is not even an actual error. It shows what stage it’s currently running and in this case we are discussing problems within Super IO Initialization.

In a few words, the debug code 99 is talking about an issue related with the boot process and more particular with the master hard disk. Of course, the motherboard can cause the issue, but it might be something with the BIOS setup too.

In this article we will try to find the proper fix for PC error code 99, so keep reading.

How can I fix the motherboard error code 99?

1. Set the SATA mode into AHCI

  1. Press the Windows key, and type cmd.
  2. Right-click on Command Prompt, and select Run as Administrator.
  3. In the Command Prompt, enter the following command and hit the Enter key: bcdedit /set {current} safeboot minimal (ALT: bcdedit /set safeboot minimal)
  4. Restart your PC, and enter BIOS Setup.
  5. Set the SATA mode to AHCI instead of IDE or RAID.
  6. Select Save and exit.
  7. Press the Windows key, and type cmd once more.
  8. Right-click on Command Prompt, and select Run as Administrator.
  9. Type the following command, and hit the Enter key: bcdedit /deletevalue {current} safeboot (ALT: bcdedit /deletevalue safeboot)
  10. Restart your PC once more, and Windows will automatically start with AHCI enabled.

If you can go to BIOS, you should start the troubleshooting process by ensuring that the SATA mode is set into AHCI instead of IDE. Moreover, the boot order should follow the UEFI protocol by default.

2. Verify the Time and Date from BIOS

In order to fix the motherboard error code 99, you can also verify the Time and Date from BIOS.

While your PC boots, keep pressing Del or certain F key to enter BIOS. Usually there will be a message saying to press a certain key (F1, F2, F10) to enter SETUP.

Remove PC Errors

Run a PC Scan with Restoro Repair Tool to find errors causing security problems and slowdowns. After the scan is complete, the repair process will replace damaged files with fresh Windows files and components.

Disclaimer: to remove errors, you need to upgrade to a paid plan.

If you can’t find this key, check your motherboard manual to see which key is used to enter BIOS. 

Once you get to the Main menu, you have to locate the Time and Date section. Navigate to the section by using the arrows keys, and verify the time and date. Select Save and Exit to exit.

3. Reset or update CMOS

You can even choose to reset or update CMOS as this can easily fix the error code 99. Do note that depending on each manufacturer the BIOS options might differ.

Updating BIOS without booting into Windows is possible only for newer motherboards while making a reset can be done by accessing factory settings.

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