Cause, Signs, and Symptoms of Faulty Motherboard

👤 Diwas Poudel    🕒 Oct 2 2021    📁 Fix    📜 0 comment

The motherboard is a central component of any electronic device where all other electronic components like RAM, ROM, Processor, HDD, Graphics Card, Bridges, PCI slots, CMOS, etc are interconnected. It is one of the expensive components of computers and laptops. If you have to change the motherboard because of some damages, you have to search compatible motherboard that fits with an existing component like HDD, Processor, RAM, and many more. Which is never a happy process. In most of the case, people purchase a new laptop or computer instead of repairing it.

As there is no hardware that lasts forever. As you go it starts degrades its performance and finally stops working. But if you want to last longer your motherboard with the right care, you have to know the cause, signs, and symptoms of a faulty motherboard.

Signs and Symptoms of Faulty Motherboard 

Some of the symptoms of a failing motherboard are :

1  Failing to boot 

When you press the power bottom of your laptop or computer then your computer fails to boot and shows no display at all. This can be due to a problem with your motherboard.

2  Blue Screen of Death

When you start your PC then if it shows a blue screen with failures messages with some error codes then there can be problems in various components like RAM, HDD, and even Motherboard. Some motherboard brands will display the cause of the problem as well.

fig. blue screen of death error


Just search those errors in google and try to solve it.

3 Freeze or Glitches the computer

When you start your PC then it will work normally initially and when you continue using it, then it will freeze the computer. There can be many causes of freezing computers. It might be software related or hardware-related issue.

If this freezing happens on a frequent basis then there are more changes problems in the motherboard. And you probably do not get this problem until it is too late.

4 CPU Restart Abnormally

Sometimes your computer restart abnormally this can be due to improper power provided by the motherboard to different components attached to it.

5 Hardware is not recognized

Sometimes the hardware like USB Port, Audio Port, Mouse Port, and other different internal component like RAM, CPU, Graphics Card, CMOS, BIOS stops functioning properly due to improper power delivered to it. It can be a sign of a faulty motherboard.

6 Slow down performance 

If your motherboard is too old then you may fill degrade in the performance of your Pcs. Like, may take a long time to boot up your PC.

7 Not enough power and data speed to the component

Sometimes your computer stops working, CPU and motherboard attached fans' speeds slow down if your motherboard cannot deliver enough power and data flow to the various components.

Also Read: Different Parts of Motherboard and its function

8 PC overheats abnormally

Sometimes PC overheats abnormally and you will feel laptops is hotter than before.

9 Abnormal Beeps Noises from PC

With the help of patterns of beep of your BIOS, we can identify the problem in the hardware.

In the case of Award BIOS, repeating beeps means memory error. There can be problems with the memory or memory slot of the motherboard.

10 Burning smell from Motherboard 

If you feel that laptops and PCs make a burning smell then it can be the symptoms on the motherboard. In the case of PCs open CPU casing and look and feel is it from the motherboard.

14 Capacitor punctured and Bulging

First, open your PC's Casing or laptop casing, and when you notice capacitors in the motherboard are punctured and bulging its size then its more chance your motherboard will get damaged sooner.

Also if the capacitor of the motherboard is charred and discolored then also there is more chance your motherboard gets damage.

bulging capacitor
   fig. Bulging and punctured Capacitor
Also Read: Computer | Laptop Ports and Their Functions Explained

15 Motherboard Bend

When you open your PCs casing and found that the motherboard is bend due to various reason like heating up, physical damage to it, etc can damage your system.PCB board can get crack due to mechanical overstress or thermal shock; 

Please contact professional and do not try to repair yourself and any activities that may lead to damage to your system.

Cause of Motherboard Failure

1 Power Fluctuations

If your laptop and PC's motherboard is experiencing power fluctuations/spikes then there is more chance that your Motherboard may get damage.

fig. Electric Surges and fluctuations


As we know that motherboard works with DC power only, if your Power Supply is not working and delivers direct AC or heavy fluctuating AC current then it may damage the motherboard. 

Prevention: Use a high-quality Surge Protector to safeguard your motherboard from electrical spikes and fluctuations. Also Please consult with technicians because they may lead to severe injury.

fig. Surge Supressor

2  Dust Particles

If you are not servicing your laptop or PCs from time to time then your motherboard will get dust particles and this dust may affect the IC of the processor, jams the processor fan which degrades the motherboard life. Corrosive dust can damage switches, contacts of the motherboard. 

fig. dusty motherboard (source)

3  Overheating

Due to many reasons like dust, voltage fluctuations, your motherboard temperature may increase and gradually overheats the whole system and generates a bad smell in the motherboard which is the symptom of a faulty motherboard. The clogging of motherboard and CPU fans can cause a motherboard to overheat.

Prevention: We can prevent this by using heatsink paste in between processor and processor fans. Clear the motherboard regularly. Use temperature recording and alerting software. Use laptop in the cool room.

In most, modern computers and laptops, systems will shut down automatically because of overheating.

4  Physical Damage

If you drop your PC and laptop then your motherboard parts may get damaged. If your laptop and PCs are fallen to the ground, then electronic parts of the motherboard may get loose and damage because there might be movable parts and components attached to the motherboard. This may also cause a short circuit in your motherboard.

Physical damage, such as burnt transistors or chipped circuits, can cause catastrophic failure of symptoms of a faulty motherboard. 

Prevention: Carefully move your laptop and PC.

5  Normal Aging

Every electronic has life. They are not immortal. Similarly, the Motherboard after aging will have more chance of damage.

Prevention: If the motherboard is in worse condition then better don't use it and replace it with the new motherboard.

6  Liquid Damage

If any liquid spills upon the motherboard then there is the chance of short circuit the motherboard. This will damage not only the motherboard but whole your computer system.

Also liquid causes a chemical reaction with the circuit board and an internal component of the motherboard and damages the motherboard.

liquid split laptop
fig. liquid spills on laptop

Preventions: Better do not bring liquid materials near to your PC or laptops. And if liquid spills on the motherboard, immediately turn off your system and take it to technicians.

7  Manufacturer Design Issues.

Cheap motherboards have more chance to be faulty. In most the cheap motherboard, cheap components are installed and maybe they are improperly engineered. This may cause cooling issues.

Prevention: So, always buy new laptops and motherboards from brand companies only.

8  Lightning 

Lightning is also the cause of faulty motherboards. The electric circuit board will be affected by lightning as well. It is a natural process and is difficult to protect devices from it.

prevent computer and laptop from lightning
fig. lightning

Prevention: Do earthen in your house.

9  Use of Incompatible Hardware Component

The use of Incompatible and low brand hardware components like RAM, HDD, CPU, PCI chips, CMOS Battery, the graphics cards may bring irregularity and may bring negative impact to other hardware components and motherboard.

Reason for Faulty Mobile Motherboard

Above reason plus:
1) Using incompatible Chargers. Because incompatible chargers may not provide the required power to the mobile battery.
2) Rooting the mobile phone can also be an issue for motherboard failure.


Does all the data in a phone and computer get removed when the motherboard crashes?

Ans: No because data are stored in Hard Disk /SSD, not in the motherboard.

Can a dead phone motherboard be fixed?

Ans: Yes and No. It depends on the condition of the motherboard. Sometimes the cost of repairing is high then it's better to buy a new phone.

Can a motherboard be outdated?

Ans: Every hardware component has a finite life. Motherboards performance, in general, degrades with time.So according to technician motherboard last like 5 to 10 year.

What happens if a motherboard fails?

Ans: If the motherboard is dead, simply your computer is also dead.