Causes and solutions for BIOS not booting after replacing the CPU, how to replace the CPU, etc.

This time, we will mainly explain the causes and solutions if the BIOS does not start after replacing the CPU.

If the BIOS (UEFI) does not start or the computer does not work, there are cases where the CPU is the cause and cases where parts other than the CPU are the cause, so we will explain these cases as well. This is an article.

We will also explain how to replace the CPU and what to be careful about when replacing it, so we hope you will find it useful.

Causes and solutions for BIOS not booting after replacing AMD Ryzen CPU

If you have replaced the AMD Ryzen CPU but the BIOS does not start, the following may be the cause.

• For AMD Ryzen, you may need to update the BIOS (UEFI)
• For AMD CPUs, the CPU pins are broken or bent.

For AMD Ryzen, you may need to update the BIOS (UEFI)

If you have replaced the AMD Ryzen CPU but the BIOS does not start, you may need to update the BIOS (UEFI).

The method for updating the BIOS is as follows.

[How to update BIOS]

1. Check the motherboard you are using
   You can search for "System Information" on the taskbar, open it, and check "System Summary". "Baseboard manufacturer" is the motherboard manufacturer, and "Baseboard product" is the motherboard model number.
2. Obtain the update file from the motherboard manufacturer's website
3. Follow the manufacturer's instructions to perform the update
4. Once the update is complete, open "Update & Security"
5. Select "Recovery"
6. Select "Restart now"
7. Select "Troubleshoot"
8. Select "Advanced options"
9. Select "UEFI Firmware Settings"
10. Select "Restart"

For AMD CPUs, the CPU pins are broken or bent.

If you replaced your AMD CPU but the BIOS still won't boot, the pins on the CPU may be broken or bent.

In the case of AMD's Ryzen, there are cases where the many pins on the CPU become bent due to impact or incorrect insertion. If this happens, use a tool to carefully fix the pin, as trying to put it back in poorly may end up breaking it. It seems easier to adjust with a cutter than with tweezers.

Causes and solutions for BIOS not booting after replacing Intel CPU

The following may be the reasons why the BIOS does not start even though you replaced the Intel CPU.

• In the case of Intel CPUs, the sockets are the same but the motherboards are not compatible.
• For Intel CPUs, the pins on the motherboard's CPU socket are broken or bent.

In the case of Intel CPUs, the sockets are the same but the motherboards are not compatible.

If you have replaced the Intel CPU but the BIOS does not start, it is possible that the motherboard is not compatible even though the socket is the same.

The CPU socket is the part where the CPU is installed.
If the shape of this socket does not match the motherboard, of course you will not be able to connect it.

However, it is important to note that even if the shape of the socket is correct, it cannot be used unless the chipset supports it.

Compatible chipsets can be found by alphanumeric characters written on the motherboard.
When choosing a CPU, you need to check whether the motherboard is equipped with a compatible chipset.
This applies not only to Intel but also to AMD's Ryzen.

Intel's chipset types include:
From top to bottom, these are high-end models.

• Z
• H (70)
• B
• H(10)

Furthermore, numbers such as 400s and 500s are included below this alphabet.
Please note that the supported chipsets vary depending on the generation.

There are also different types of AMD chipsets, including:
These are also ranked high in order from top to bottom.

• X
• B
• A

Also, after this alphabet there is a number that represents the generation.

To find out which chipsets are compatible with these CPUs, it would be a good idea to enter the CPU name in the search box and search along with the keyword "compatible chipsets."

For Intel CPUs, the pins on the motherboard's CPU socket may be broken or bent.

If you've replaced your Intel CPU but the BIOS won't boot, it's possible that the pins on the motherboard's CPU socket are broken or bent.

Unlike AMD, Intel does not have pins on the CPU side, but has pins on the socket side.

After all, if this pin breaks, it's a problem. Just like with broken pins on AMD CPUs, fix them carefully.

Reasons and solutions for not booting after replacing CPU common to Intel and AMD

Common reasons for Intel and AMD computers not booting even after replacing the CPU are as follows:

• You inserted the memory in the wrong place.
• Try clearing CMOS
• The problem was not caused by the CPU in the first place.

You inserted the memory in the wrong place.

If you replaced the CPU but it still won't start, you may have inserted the memory in the wrong place.

Memory has a direction in which it can be inserted, so be sure to check this direction before inserting it.
If this direction is incorrect, it may cause damage or trouble.

Also, be careful not only to insert the memory into the correct place, but also to insert it firmly.
If it is not inserted enough and is floating, the computer may not work properly.

However, pushing too hard or repeatedly inserting and removing the connector can also cause damage or malfunction. Insert it in the correct direction with the appropriate amount of force.

First, check the location of the memory on the motherboard. Then, align the unevenness of the memory and insert it by applying pressure evenly on both sides.

Try clearing CMOS

If you have replaced the CPU but the BIOS does not start, clearing the CMOS and updating again may solve the problem.

CMOS is a memory that stores BIOS information.
In other words, CMOS clearing is to clear the BIOS information on this CMOS once.
The BIOS will be initialized by cutting off the power to CMOS.

[How to clear CMOS and update again]

1. Turn off your PC
2. Remove all peripherals
3. Remove the PC cover
4. Remove all cables from motherboard
5. Remove motherboard battery
6. Leave the battery removed for a while, or discharge it using a jumper pin or land.
7. Put everything back together in reverse order
8. Turn on the power
9. Check if the BIOS CMOS time is set to the initial value (1999/01/01 etc.)

The problem was not caused by the CPU in the first place.

If you have replaced the CPU but it still won't start, there is a possibility that the CPU is not the problem in the first place.

For example, it could be a problem with the memory or motherboard.

• If the CPU fan repeatedly spins and stops, there may be a problem with the motherboard.
• If all the fans are spinning at high speed, there is a high possibility that the motherboard is defective.
• If you hear a specific beeping sound, there may be something wrong with your memory or disk drive. This may be caused by improper installation of parts or heat caused by dust.
• If a code is displayed on the motherboard LED (Asrock's Dr.Debug), the error content varies depending on the code. (ASRock > Frequently Asked Questions and Answers)

How to replace the CPU and things to be careful about when replacing it

In this article, we will explain how to replace the CPU and what to be careful about when replacing it.

• CPUs are hard to break in the first place.
• Check chipset and socket

CPUs are hard to break in the first place.

To begin with, CPUs are difficult to break.

CPUs do not have a clear lifespan and are hard to break parts.

Therefore, if it does not work before or after replacing the CPU, it may not be the end of the CPU's lifespan, but some kind of malfunction, or the CPU may not be the cause.

However, it is possible that the CPU may be physically damaged due to heat buildup or shock.

Overclocking also puts a strain on your CPU, which can lead to faster damage.

Overclocking means running your CPU faster than its rated speed.

Overclocking increases processing speed, but it also puts a strain on the CPU. Overclocking requires higher voltage, which increases the amount of heat generated by the CPU, which can lead to malfunction if the cooling function is insufficient.

Overclocking can be set using BIOS (UEFI) or free software.

It can be said that CPUs are hard to break unless you do something that puts stress on them, such as overclocking as explained above.

Check chipset and socket

One thing to keep in mind when replacing the CPU is checking the chipset and socket.

It may not work if the CPU is not compatible with the chipset or motherboard.

Therefore, check your motherboard and chipset's instructions and specifications to see if your CPU is compatible.

Also, the socket on the motherboard may not match the CPU, so when replacing the CPU, you may also need to replace the motherboard with one that matches.
(Even if the socket matches, it may not work if the chipset does not match)

Please check it out as explained below.

→In the case of Intel CPUs, the sockets are the same but the motherboards are not compatible.

How to replace a laptop CPU

Most laptop CPUs are directly soldered. In such cases, amateurs cannot replace it. However, some laptops use a socket to connect the CPU, so you may be able to replace it.

However, considering the overall structure such as heat generation and exhaust, it may be difficult to replace it yourself. Therefore, it is not recommended to replace the CPU of your laptop by yourself.

To briefly explain, the procedure for replacing a laptop's CPU is as follows.

If you have never replaced a computer part or are not very familiar with it, you may end up damaging the cover by trying to force it open in the first place. Therefore, check the information for each computer to find out how to open it.

[How to replace the CPU of a laptop]

1. Prepare a screwdriver that fits your laptop's screws and a cleaning tool to remove dust.
2. Prepare a CPU that matches your laptop
3. Turn off your laptop and disconnect all cords and peripherals
4. Unscrew and open the laptop cover
5. Remove the fan attached to the CPU
6. unlock the CPU
7. Remove the CPU body from the board
8. Install the new CPU and lock it
9. Install the CPU fan
10. Close the computer cover and restore it by reversing the steps from the beginning.

Summary of causes and solutions for BIOS not booting after replacing CPU

This time, we explained the causes and solutions for the problem that the BIOS does not start even after replacing the CPU.

We also touched on how to replace the CPU, but if you are not familiar with it or are thinking of replacing your laptop's CPU, it may be better not to do it yourself.

The reason is that the CPU is often soldered, and even if it is not, there are structural problems. If you still want to replace it yourself, please back up your data and try replacing it at your own risk.

It is also important to note that even if the CPU socket matches, it will not work if the motherboard chipset does not support it.

Also, other parts such as memory may be the cause, not just the CPU.

There are various causes for the problem of BIOS (UEFI) and computer not starting, but please refer to this article and check the causes one by one.