CPU DXE Initialization Is Started - Here's How to Fix It!

When you see the “CPU DXE Initialization Is Started” message on your computer, the system prepares the CPU to work during the boot process.

“CPU DXE Initialization Is Started” means the system initializes the processor, chipset, and platform components during boot. Error 67 often refers to this phase, ensuring the CPU is configured correctly for startup.

In this guide, we’ll explain what this message means, why it happens, and how to easily fix any related problems.

Table of Contents

The Evolution from BIOS to UEFI

In the past, computers used BIOS (Basic Input/Output System) to start up and manage hardware. However, BIOS has many limitations, especially with new technology.

UEFI (Unified Extensible Firmware Interface) replaced BIOS to offer better performance, faster boot times, and more security features.

UEFI helps computers handle larger storage drives and more advanced hardware. This change made modern computers more reliable and secure. It also improved the overall user experience, making the boot process smoother and faster.

Overview of the UEFI Boot Process

The UEFI boot process happens in several stages to start a computer correctly. First, the SEC phase begins security checks and starts the CPU.

Then, the PEI phase prepares the RAM and other essential components. Next, the DXE phase initializes most hardware, like USB ports, graphics, and the CPU.

After that, the BDS phase selects the boot device, like a hard drive or USB. Finally, the operating system loads and the computer is ready. Each step makes sure the system works smoothly and securely.

In-Depth Look at the DXE Phase

The DXE phase is one of the most critical steps in the UEFI boot process. During this phase, the CPU and other hardware parts are fully initialized.

It runs special drivers to activate devices like USB ports, graphics cards, and network adapters. This phase helps the computer communicate with different hardware components.

If there are any hardware problems, they often show up during this step. Understanding the DXE phase is essential for troubleshooting startup issues and ensuring the computer runs correctly.

Significance of “CPU DXE Initialization Is Started”

The message “CPU DXE Initialization Is Started” means that the computer’s CPU starts during the DXE phase of the UEFI boot process.

This step is crucial because the CPU is the brain of the computer. Without the CPU, the computer cannot function.

During this phase, the system checks if the CPU works properly and prepares it to run other hardware and software. If this process fails, the computer may not start. Understanding this message helps users know if their CPU is starting correctly or if there is a hardware issue.

Common Issues and Troubleshooting Steps

The “CPU DXE Initialization Is Started” message may indicate hardware or software-related issues during the boot process. Understanding these problems and applying the proper troubleshooting steps can help fix startup failures and get your computer running smoothly again.

1. Loose Hardware Connections

Loose CPU, RAM, or power cables can stop the DXE phase. Power off the computer, open the case, and gently reseat the CPU, RAM, and cables. Make sure all components are correctly installed to avoid connection problems during startup.

2. Faulty RAM

Faulty RAM is a common cause of boot failures. Remove the RAM sticks one by one and try restarting the system. If the computer starts without a specific stick, replace the faulty RAM with a compatible one for better performance.

3. BIOS/UEFI Settings

Wrong BIOS or UEFI settings can prevent hardware from working correctly. Remove the CMOS battery for a few minutes to reset the BIOS to default settings. This clears custom settings and helps the system return to factory settings.

4. Outdated Firmware

Old firmware might not support the installed CPU. Visit the motherboard manufacturer’s website, download the latest UEFI firmware, and update it carefully. Updating firmware can solve compatibility issues and improve system performance.

5. Damaged CPU or Motherboard

If the system still doesn’t start, the CPU or motherboard might be damaged. Look for physical damage, such as burns or bent pins. If found, contact a technician or replace the faulty component to restore the system.

Diagnostic Tools and Methods

Using the right diagnostic tools and methods helps identify why the “CPU DXE Initialization Is Started” message appears. These tools make troubleshooting more manageable and help detect hardware or software issues.

1. Built-in UEFI Diagnostics

Many motherboards have built-in UEFI diagnostic tools. You can access the UEFI settings during startup by pressing the DEL or F2 key. You can also run hardware tests to check the CPU, RAM, and other components.

2. POST Beep Codes

Motherboards use beep sounds during startup to show hardware errors. Check your motherboard manual to understand the beep codes and diagnose issues.

3. Diagnostic LEDs

Some motherboards have small lights that show hardware status. These LEDs can indicate which part, like the CPU, RAM, or GPU, is causing the problem.

4. Hardware Testing Tools

Use external tools like MemTest86 to check RAM or Intel Processor Diagnostic Tool to test the CPU’s performance and health.

5. Multimeter Testing

If you suspect power supply issues, use a multimeter to check the voltage output from the power supply unit (PSU). Incorrect voltage could cause boot problems.

Preventive Measures

Preventive measures can help avoid “CPU DXE Initialization Is Started” errors and keep your system running smoothly. Follow these tips to maintain system health:

Keep your UEFI firmware updated to ensure compatibility with the latest hardware.
Regularly clean CPU fans and heatsinks to avoid overheating issues.
Use a surge protector to protect the motherboard from power fluctuations.
Install compatible RAM and hardware components to prevent conflicts.
Perform routine hardware checks to detect loose connections or failing components.
Avoid overclocking unless necessary, as it can cause instability.
Backup important data before making any BIOS or hardware changes.

Advanced Considerations

For experienced users, advanced steps can help fix “CPU DXE Initialization Is Started” issues and improve system performance:

Enable UEFI Secure Boot to protect against unauthorized firmware changes.
Use debug tools like Intel System Debugger to analyze CPU activity during boot.
Update microcode patches to fix CPU vulnerabilities and improve compatibility.
Customize UEFI boot order settings to optimize startup performance.
Use thermal monitoring software to check CPU temperatures and avoid overheating.
Apply custom BIOS configurations only if you fully understand the settings.
Consult manufacturer technical documents for advanced troubleshooting methods.

CPU DXE Initialization Is Started Motherboard

This message shows that the motherboard has started the CPU during the DXE phase. It means the system checks the CPU and prepares it to run other devices. If the process stops, there might be a hardware issue.

CPU DXE Initialization Is Started MSI

On MSI motherboards, this message means the system is starting the CPU as part of the DXE phase. If the message stays too long, try updating the BIOS, checking RAM, or resetting BIOS settings to fix the issue.

CPU DXE 64

The CPU DXE 64 message means the system starts the 64-bit CPU in the DXE phase. This process happens in modern computers that use 64-bit architecture. Any failure here may be due to incompatible hardware or firmware problems.

DXE Core Is Started

The DXE Core is Started message shows that the main DXE drivers are running. These drivers help the system connect with hardware like USB ports and storage devices. If the system freezes, faulty drivers or firmware errors could be the reason.

System Agent DXE Initialization System Agent Module Specific

This message shows the System Agent is starting during the DXE phase. The System Agent manages memory, graphics, and PCIe devices. If the process fails, it might be caused by faulty RAM, graphics cards, or BIOS settings.

DXE IPL Is Started

The DXE IPL (Initial Program Load) message means the DXE phase is preparing to load essential programs. This step helps the system boot into the operating system. Any failure here might point to corrupted firmware or hardware issues.

DXE SB Initialization

The DXE SB (South Bridge) Initialization message shows the system is starting the South Bridge chipset. The South Bridge controls USB ports, audio, and storage. If there are issues, faulty USB devices or damaged motherboards might be the cause.

CPU DXE Initialization Started Code

The CPU DXE Initialization Started Code means the system starts the CPU during the DXE phase. This step checks if the CPU works appropriately. If the system gets stuck, it might be caused by faulty hardware or outdated BIOS.

Code 76, PCH DXE Initialization

Code 76 shows that the system starts the PCH (Platform Controller Hub) during the DXE phase. The PCH controls USB, audio, and storage. If the system freezes, try resetting the BIOS or checking connected devices.

Q Code 67 on Motherboard

Q Code 67 means the CPU is starting during the DXE phase. This error happens if the CPU, RAM, or BIOS settings are incorrect. Check if the RAM is installed correctly and update the BIOS to fix it.

Q-Code 67 “CPU DXE Initialization is Started.”

This error means the motherboard is trying to start the CPU but might be stuck. Loose RAM, CPU problems, or the wrong BIOS settings can cause it. To fix it, try reseating the hardware or clearing the CMOS battery.

Randomly Stuck During POST at Q-Code 65

Q-Code 65 shows that the system tests the CPU during the POST process. If the system gets stuck, the problem might be with the CPU, RAM, or overheating. To solve the problem, reseat the components or check the cooling system.

New Build with ROG Maximus Z690 Hero Won’t Boot, Q-Code 63

On the ROG Maximus Z690 Hero, Q-Code 63 means the CPU or RAM is not starting correctly. This often happens in new builds. Try updating the BIOS, testing different RAM slots, or checking CPU compatibility.

Motherboard Stuck on Error Code That Stands for “CPU DXE Initialized”

If the motherboard shows this error, the CPU initialization process has stopped. This can happen due to wrong BIOS settings or lousy hardware. Reset the BIOS to default or check if the CPU is installed correctly.

Upgrade to New Motherboard Has POST Halting at System Agent DXE Initialization

When upgrading a motherboard, the System Agent DXE Initialization error might stop the system. This happens if the RAM, CPU, or GPU is not compatible. Check the motherboard’s compatibility list and update the BIOS to solve the issue.

FAQs

1. What is DXE Initialization?

DXE initialization is a part of the UEFI boot process, where the system starts hardware drivers like CPU, USB, and graphics.

2. What is CPU Initialization?

CPU initialization is when the computer checks and prepares the CPU to work before loading the operating system.

3. How to Fix a CPU Error?

To fix a CPU error, check CPU connections, reset BIOS settings, update firmware, and ensure the CPU is compatible.

4. What is Code 63 on ASUS Mobo?

Code 63 on ASUS motherboards means the CPU is not starting correctly. Check the CPU installation and update the BIOS.

5. What Does DXE Mean?

DXE stands for Driver Execution Environment, a phase in UEFI boot that starts drivers to connect hardware with the system.

6. What is Initialization Mode?

7. Initialization mode is when the system prepares hardware and software to work correctly before starting the operating system.

7. What is the Initialization of BIOS?

The initialization of the BIOS is when the system checks and activates hardware devices like CPU, RAM, and storage before booting.

8. What is CMOS Error on Start Up?

A CMOS error happens when the BIOS settings are wrong, or the CMOS battery is dead, causing startup problems.

9. What is Automatic Initialization?

Automatic initialization happens when the computer automatically checks and prepares hardware without user input during startup.

10. What is the Correct Order of the UEFI Boot Phases?

The UEFI boot phases are SEC, PEI, DXE, BDS, TSL, and the operating system loads.

Conclusion

The “CPU DXE Initialization Is Started” message is part of the UEFI boot process, ensuring the CPU starts correctly. Understanding this phase helps troubleshoot hardware issues, maintain system health, and improve your computer’s performance for a smoother startup experience.