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Reasons For Hp All-in-one Beep Codes 3 Long And 4 Short

  • Aryan 
  • 10 min read

Reasons For Hp All-In-One Beep Codes 3 Long And 4 Short

HP All-In-Ones are great computers. But sometimes, they give you problems. One of those problems is the BIOS.

The HP 3 long beep indicates an issue with the BIOS settings. The 4 short beeping means that the flash­ing has failed, i.e., it was unable to complete.

The BIOS is the basic software that controls how your computer works. You might think that the BIOS is pretty simple, but it has a lot of complex settings. Sometimes, those settings cause problems.

Listen carefully to those beeping noises coming from your HP all-in-one without thinking too hard about them. You’ll usually find that there’s a regular pattern to them, and they are meant to tell you that there’s some sort of problem with your computer.

When Do You Hear Beep Codes?

These beeping codes are given out when there’s a problem with your computer. They’re indicative of problems with the BIOS, which is the part of the motherboard that controls how your computer boots up.

So, whenever you hear those beeping codes during the startup process, it means that there’s a problem with the BIOS.

This is why you should pay close attention to any beeping sounds that occur during the startup process. If you notice anything unusual, it might mean that your computer needs to be repaired.

What Causes The 3 Long And 4 Short Beep Codes?

The 3 long beeps and 4 short beeps are made up of two different types of beeps. Both of those beeps have specific meanings.

The 3 long beep indicates a particular problem, and the 4 short beeps mean something else entirely.

According to the HP Support Document about beeps with error codes, the 4 short beeps mean “Flashing Failed”. And according to a different website, the 3 long beeps indicate that the flashing is “unable to start”.

That might seem like a bit of gibbered, so let’s break down what it means.

So if you hear the 3 long beeps, it probably means that there was a problem with the flashing process.

But if you hear the 4 short beeps, it probably doesn’t mean anything bad.

Instead, it means that the flashing process started successfully, but then stopped working due to a software or hardware glitch.

1. External Devices and Hardware

This issue is usually caused by external devices like printers, scanners, mice, keyboards, etc. You should try checking if any of those devices are malfunctioning before trying to fix the problem yourself.

Another reason why you might experience this issue is if there is a hardware failure in your computer system. Try replacing the motherboard, CPU fan, power supply unit, hard drive, RAM, graphics card, etc.

Finally, the issue can also occur if there is a software problem in Windows operating system. Try updating the drivers for your motherboard, CPU, GPU, sound card, etc.

2. BIOS Image

There are two reasons why your computer might be beeping. One reason is that your motherboard or CPU may be defective. Another reason is that your BIOS image may be damaged.

Your motherboard or CPU is the main component inside your computer that controls how your computer works. If your motherboard or CPU is defective, then it won’t work properly. You’ll hear a constant beep noise whenever your computer starts up.

This problem usually happens when you install Windows 10 or any other operating system. But sometimes, it can happen after installing a driver update.

To find out whether your motherboard or CPU is faulty, try booting your computer using a Live CD/DVD. If your computer boots fine, then you know that your motherboard or CPU isn’t faulty.

Another solution is to download a copy of your BIOS image file and save it somewhere else. Then, replace the corrupted version with the saved one.

If you still experience problems, then you should contact a technician.

3. CMOS battery

A CMOS battery is a small battery that helps keep your computer running even when the power supply is turned off. It’s located inside your motherboard and powers the system BIOS.

So any issue with this battery failure can lead to problems with your computer. You might experience error from the category of error like “No bootable disk”, “Invalid signature” or “Missing operating system”.

To fix these issues, you should replace the CMOS battery. But before doing that, you should know how to identify whether your CMOS battery needs replacing. These are some tips on how to find out whether your BIOS battery is faulty.

Solutions To The 3 Long And 4 Short Beep Code Error

We’ll take a closer look at each solution separately with its cause identified.

1. Remove Any External Devices And Restart The Computer

If your computer keeps beeping when you plug in external devices, then there’s probably something wrong with those devices. You should try removing them and resetting your computer before continuing.

To remove external devices, turn off your computer. Then unplug all cables from your computer except for the power cord. Next, disconnect the power supply cable from the wall outlet. Finally, open the case of your computer and pull out the hard disk drive. After doing this, close the case and turn on your computer again.

Once you’ve done all of this, you should be able to start using your computer without any problems.

2. Troubleshooting Bios Image Issues

HP offers a free download of its BIOS update utility called “Update Manager”. This utility helps you to easily install the latest version of the BIOS.

Then select the Hardware tab and scroll down until you find the name of the motherboard. Click on the Properties button next to it. Now select the Updates tab and click on Download updates now.

After clicking on the Download updates now option, you will be directed to the HP Support site where you can download the latest version of the bios. After downloading the file, run the setup program and follow the prompts to finish installing the updated BIOS.

3. Fix The CMOS Battery

CMOS stands for Central Monitoring System. It’s a small chip inside your computer that monitors various aspects of your PC. One of those aspects is whether or not your power supply is providing enough electricity to keep your system running smoothly.

If your CMOS battery isn’t working properly, then you might experience random beeps coming from your computer. You can fix this issue by replacing the CMOS battery.

To find out if your CMOS battery needs changing, simply open up your computer and check its voltage level. If it reads below 3 volts, then replace the battery.

Computer Beep Codes

There are several reasons why your computer might beep. You should try to figure out if it’s a software issue or a hardware issue before calling a tech support number. Here are some common causes of beeps:

  • AC Adapter Failure – If the AC adapter fails, the computer will start beeping continuously.
  • System Board Power – If the system board power goes off, the computer will start generating beeps.
  • Processor Failure – If the processor fails, the computer will generate beeps.
  • BIOS Corruption – If the BIOS becomes corrupted, the computer will start producing beeps.
  • Memory Failure – If the memory becomes faulty, the computer will start emitting beeps.
  • Graphics Failure – If the graphics card fails, the computer will emit beeps.
  • System Board Failure – If the motherboard fails, the computer will produce beeps.
  • Bios Authentication Failure – If the bios authentication fails, the computer will begin beeping.

Dell Beep Codes

There are four types of Dell beep codes. Each code represents a specific problem or issue with your computer. You may receive any combination of these codes, depending on how long your computer has been running.

  • Beep Code 1 – Power On Self Test

This code indicates that your computer was turned on without being plugged in.

  • Beep Code 2 – System checksum Error

This code indicates that there is a system error message.

  • Beep Code 3 – Hardware Problem

This code indicates that the hardware component of your computer is malfunctioning.

  • Beep Code 4 – Service Requested

This code indicates that you requested service for your computer.

These codes are usually accompanied by a pop-up window that appears after you press the power button. These windows give you options to fix the problem yourself or send the computer to Dell for repair.

IBM Desktop

Here are some common errors associated with IBM desktops:

No Beep – No Power, Loose Expansion Card (ISA, PCI, Or AGP)

1 Short – System Okay

1 Long – Video / Display Problem; Video Card Incorrectly Seated Or Defective

2 Shorts – POST chipset Error Displayed On Monitor

3 Longs – Problem With 3270 Keyboard Card

1 Long, 1 Short – Problem With System Board

1 Long, 2 Shorts – Problem With Display Adapter (MDA, CGA)

1 Long, 3 Shorts – Problem With Ega

Repeating Shorts – Problem With Power Supply Or System Board

Continuous Beep – Problem With Power Supply or System Board

IBM ThinkPad

To find the cause of the problem, you must identify the specific component that causes the beep code. Once you know which part is causing the problem, you can determine if there’s anything wrong with it.

For example, if the beep is coming from the power supply, you might try replacing the power supply.

Alternatively, if the beep comes from a motherboard component, you might replace the motherboard.

If the beep comes from the keyboard, you might try replacing any defective keys.

If the beeps come from a speaker, you might try replacing its ribbon cable.

If the beeping continues after replacing components, you might consider contacting a repair shop.


A BIOS beep code is used to let you know whether your system is functioning properly. You may hear a single beep, two short beeps, one continuous beep followed by multiple short beeps, or one continuous beep followed by three short beeps.

If you hear a continuous beep, it means that your system doesn’t recognize your hard drive. This usually happens when you plug in a USB flash drive or external hard disk. Or maybe your system isn’t recognizing the RAM modules.

To fix this issue, try restarting your computer and pressing F2 during startup. This should bring up the BIOS setup menu. From here, you can press Del to enter the BIOS setup utility.

Once inside the BIOS setup utility, you can access the Advanced Features section where you can change settings related to your hardware components.

Here, you can turn off auto-recovery mode, enable crash detection, and perform a quick recovery. You can also reset your CMOS battery.


This post will show how to fix the errors from the error category of Lenovo Beep Codes 3 Long 4 Short.

First, we need to know the meaning of the code.

1. POST Error Code 0x0D – This means that there was a hardware failure during boot. You may try to reinsert the battery.

2. POST Error Code 0X00 – This means that the BIOS cannot find any hard disk drive. Try to connect the HDD again.

3. POST Error Code 0xe9 – This means that the memory module is defective. Replace the memory module.

4. POST Error Code 0xf8 – This means that the CPU fan is damaged. Replace the CPU fan.

5. POST Error Code 0xc7 – This means that the power supply unit is damaged. Replace the power supply unit.

Aryan Benedict

Aryan Benedict

I'm Aryan, welcome to my profile and website My aim is to answer all your tech and gadget related questions in one, easy-to-navigate, website. I love technology and a lot of my interest lies in gadgets of today. There are many common questions I am constantly asked about various products - hence the birth of Tech Loved. My awesome team and I will answer all the questions you may have (well maybe not all, but hey, we try! :) )

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