Pre Memory CPU Initialization Is Started – 6 Steps in 2023

When “Pre-Memory CPU Initialization” issues arise when the computer is booting, it can be annoying. However, the good news is that thorough troubleshooting may usually solve many of these problems.

The “Pre Memory CPU Initialization Is Started” error typically signals hardware or configuration issues during the initial CPU setup before accessing system memory, requiring systematic troubleshooting for resolution.

This article will delve into this pivotal phase of a computer’s startup process, understanding its significance and the critical steps involved.

Why Pre-Memory CPU Initialization Error Occurs?

During the first phases of a computer’s boot process, when the CPU is being prepared for operation before accessing system memory, the error message “Pre-Memory CPU Initialization is Started” appears. 

This error often denotes an issue with essential hardware parts or system settings. The CPU socket can have problems with bent pins, incorrectly seated RAM modules, hardware conflicts, unstable overclocking, incompatible BIOS/UEFI settings, or software driver issues, among other things. 

It is frequently necessary to systematically inspect hardware, reset BIOS settings, and eliminate potential offenders one at a time to pinpoint and address the underlying problem blocking a successful boot.

Source: serverbulid.netforums

Fix #01 To Resolve Pre Memory CPU Initialization? 

Step 1: Disable Overclocking:

If you’ve recently overclocked your system using software, the first step is to revert to default settings. Overclocking can sometimes cause instability.

Step 2: Reset The BIOS (CMOS Clear):

  • Turn off your computer and unplug it from the power source.
  • Open the case panel to access your motherboard.
  • Disconnect the GPU, RAM, and storage devices.
  • Unplug the 24-pin motherboard power and 4/8-pin CPU power cables.
  • Remove your motherboard’s CMOS battery (a shiny metal coin-like object).
  • Wait for at least 3 minutes to ensure the BIOS is reset.
  • Reconnect the battery.

Step 3: Minimal Configuration:

  • For basic troubleshooting, connect only the essentials:
  • Plug in the 24-pin motherboard power and CPU power cables.
  • Install one stick of RAM.
  • Connect your monitor to the motherboard’s graphics slot (or use the GPU if your CPU lacks integrated graphics).
Minimal Configuration
Source : ResearchGate

Step 4: Boot The PC:

Plug the power cord back in and start your computer. Check if you can access the BIOS or if the system boots normally. If it does, proceed to the next steps.

Step 5: Gradual Component Testing:

  • If you can access the BIOS or the system boots, shut down the computer.
  • Gradually add components back in one by one, testing at each stage:
  • Add more RAM sticks (if you have more than one) and check if it still works.
  • Plug in your storage devices one at a time and test after each addition.
  • If everything works at this point, proceed to the next step.

Step 6: Full System Assembly:

Reassemble the system completely, ensuring all components are correctly connected.

Fix #02 To Resolve Pre Memory CPU Initialization?

Step 1: Probe Removal:

If your boot issues started after installing a probe, consider removing it. Sometimes, hardware additions can cause conflicts or short circuits. If your PC boots successfully after removal, the probe may have been the culprit.

Step 2: Check The CPU Socket:

Carefully inspect the CPU socket on your motherboard for any bent or damaged pins. Bent pins can disrupt the connection between the CPU and the motherboard, leading to boot problems. If you find bent pins, gently attempt to straighten them using a delicate, non-metallic tool.

Step 3: Memory Seating:

Ensure that your RAM modules are correctly seated in their slots. Reseating the RAM can sometimes resolve boot issues. Make sure the RAM sticks are fully inserted and securely locked in place.

Step 4: CPU Cooler Inspection:

If you use specialized cooling systems like a single-stage phase-change unit, double-check that it’s correctly installed and not causing any pressure or contact issues with the CPU socket.

Step 5: Power Supply Connections:

Verify that all power connections, including those to the motherboard and GPU, are secure. Loose connections can prevent the system from successfully POSTing.

Power Supply Connections
Source : PcInside

Step 6: Simplified Setup:

To isolate the issue:

  1. Try a simplified setup.
  2. Remove unnecessary components such as one of your GPUs, any extra storage drives, and additional RAM sticks.
  3. Test with only the essential elements required for booting: CPU, one stick of RAM, GPU, and power connections.

Step 7: BIOS Reset:

If your motherboard has a CMOS evident or reset button/jumper, use it to reset the BIOS settings to their defaults. This can be particularly helpful if there is a BIOS setting conflict related to the probe installation.

Step 8: GPU Check:

If your motherboard has integrated graphics (iGPU), try booting with the monitor connected to the motherboard’s video output. This can help rule out GPU-related issues.

Step 9: Monitor Input:

Ensure that your monitor is set to the correct input source (e.g., HDMI, DisplayPort) and that the cable functions correctly. Sometimes, monitor issues can lead to a lack of display output.

Monitor Input Types
Source : Practically Networked

Fix #03 To Resolve Pre Memory CPU Initialization? 

Step 1: Reseat the RAM:

Since your motherboard shows memory-related codes (55 and 31), ensuring your RAM modules are correctly seated is a good idea. Turn off your PC, unplug it from the power source, and then carefully reseat the RAM sticks in their slots. Make sure they are correctly clicked into place.

Step 2: Try a Single RAM Stick:

If you have multiple RAM sticks installed, try booting your PC with just one stick in the primary RAM slot. If it doesn’t work, try each stick individually to rule out any potential faulty RAM modules.

Step 3: Check For Loose Connections: 

Verify that all power and data cables are securely connected to your motherboard, GPU, and other components. Loose connections can sometimes cause boot issues.

Step 4: Inspect For Bent CPU Pins:

Carefully examine your CPU socket for any bent or damaged pins. A bent pin can disrupt the connection between the CPU and the motherboard, leading to boot problems.

Step 5: Test With Minimal Hardware:

Disconnect any unnecessary peripherals, including extra hard drives, SSDs, and USB devices. Leave only the essentials connected: CPU, RAM, GPU, and the power supply. This will help you determine if a specific component is causing the issue.

Step 6: Try A Different GPU Slot:

If your motherboard has multiple PCIe slots for the GPU, consider trying a different slot to see if that resolves the problem.

Try A Different GPU Slot
Source : Computer Reparatie Center

Step 7: Monitor Your PSU: 

While your PSU might have been insufficient initially, it’s worth monitoring its performance. A failing PSU can cause instability. If you can access a spare PSU, you could try swapping it temporarily to see if it makes a difference.

Step 8: Inspect For Physical Damage: 

Examine the motherboard for visible signs of physical damage, such as burn marks or damaged components. Inspect your GPU as well.

Step 9: Check For BIOS Updates: 

Visit the manufacturer’s website and check if any BIOS updates are available for your motherboard. Sometimes, BIOS updates can resolve compatibility issues or bugs.

Step 10: Contact Manufacturer Support: 

If none of the above steps yields results, consider contacting ASUS support or the manufacturer of your other components. They can provide specific troubleshooting guidance or advice.

Frequently Asked Questions:

1. How Do I Reset My CPU RAM?

Restarting your Windows computer or entirely shutting down and turning back on your Mac are the simplest ways to empty your RAM and start over. Your computer will be completely shut down when you remove the power and clear the RAM. You will begin using your computer again with a blank slate.

2. What Does Reset CMOS Do?

All stored data, including the BIOS settings, must be cleared to reset the CMOS chip. This will return the system to its original hardware setup, which can correct any issues brought on by a faulty CMOS chip.

3. How To Enable Both RAM In Bios?

Use the arrow keys to access the “Advanced BIOS Features” or “Advanced Memory Settings” portion of the BIOS menu. Use the arrow keys to switch the setting from “Single” to “Dual” under “Memory Mode” or “Channel Mode,” respectively. By pressing, you can save your modifications and leave the BIOS.

4. Does Removing The CMOS Battery Reset BIOS?

The Date/Time/Location settings for your console and persistent memory for BIOS are stored in the BIOS (CMOS) battery. These features will return to default after this battery is removed and reinserted.


In conclusion, many issues, including hardware incompatibilities, overclocking, or faulty components, frequently cause the “Pre Memory CPU Initialisation Is Started” error.

To identify and fix the problem, troubleshooting entails probe removal, CPU socket inspection, memory setting, and gradual component testing.

Users who follow these instructions can diagnose and resolve this problematic fault, restoring their system to regular operation.

To get more information, it might be required to contact manufacturer assistance if the issue continues.