Every time you turn on the computer, a beep will appear, then the operating system will start. Usually the beep will only appear once and start, so that the user knows the current status of the computer. If so, when the computer appears unusual beeps, such as long beeps or beeps appear many times, the user needs to check the hardware again.
Each motherboard manufacturer will use a different type of BIOS chip, from which each BIOS chip will have a different way of emitting sound. If you have difficulty detecting beep errors on your computer, you can use Beep Code Viewer software to diagnose errors through beeps. This software will synthesize all the beep types of current BIOS chip manufacturers and fully explain to you how to fix the error.
Beep Code and POST of Computer
POST (power-on self-test) checks the computer's internal hardware for compatibility and connectivity before starting the rest of the boot process. If the computer passes the POST, it may beep once (some computers may beep twice) and then continue booting. However, if the computer fails the POST, it will not beep or generate a beep code to let the user know what the problem is.
If your computer has an unusual POST process or beep code not mentioned below, follow the POST troubleshooting steps to determine the faulty hardware component.
AMI BIOS Beep Code
Below are the possible AMI BIOS beep codes. However, since this BIOS has many different manufacturers, the beep codes may vary slightly.
| Beep Code | Describe |
|---|---|
| 1 short hour | DRAM refresh error. |
| 2 short hours |
Parity error. |
| 3 short hours | 64K RAM base error. |
| 4 short hours | System timer error. |
| 5 short hours | Process error. |
| 6 short hours | Keyboard driver Gate A20 error. |
| 7 short hours | Virtual mode exception error. |
| 8 short hours | Displays failed memory read/write test. |
| 9 short hours | ROM BIOS check error. |
| 10 short hours | CMOS shutdown read/write error. |
| 11 short hours | Cache error. |
| 1 long sound, 3 short sounds | Normal/Extended Memory Error. |
| 1 long sound, 8 short sounds | Show/retrieve failed test. |
| Signal with 2 different tones | CPU fan speed low, voltage problem. |
Beep Code AWARD BIOS
Below are the possible BIOS AWARD beep codes. However, since this BIOS has many different manufacturers, the Beep codes may vary slightly.
| Beep Code | Describe |
|---|---|
| 1 long sound, 2 short sounds | Indicates that a video error has occurred and the BIOS is unable to initialize the video display to display any additional information. |
| 1 long sound, 3 short sounds | No video card detected (reseat video card) or video card is faulty. |
| The beeping sound keeps repeating over and over again. | RAM problem. |
| Repeated high pitched beep while PC is running. | CPU is overheating. |
| Repeat beeps alternating between loud and quiet | Problem with the processor (CPU). It may be damaged. |
If any other fixable hardware problems are found, the BIOS will display a message.
Beep Code Dell
| Beep Code | Describe |
|---|---|
| 1 beep | BIOS ROM is damaged or defective. |
| 2 beeps | RAM not recognized |
| 3 beeps | Motherboard error |
| 4 beeps | RAM error |
| 5 beeps | CMOS battery error. |
| 6 beeps | Video card error. |
| 7 beeps | Poor processor (CPU) |
Beep Code IBM BIOS
Below are the possible IBM BIOS beep codes. However, since this BIOS has many different manufacturers, the Beep codes may vary slightly.
| Beep Code | Describe |
|---|---|
| No beep | No power, loose power cord or insufficient power. |
| 1 short beep | POST normal, computer ok. |
| 2 short beeps | POST error, review screen for error code. |
| Continuous beeping | No power, loose power cord or insufficient power. |
| Repeated short beeps | No power, loose power cord or insufficient power. |
| 1 long beep and 1 short beep | There is a problem with the motherboard. |
| 1 long beep and 2 short beeps | Video related problem (Mono/CGA display circuit problem). |
| 1 long beep and 3 short beeps | Video display circuit (EGA). |
| 3 long beeps | Keyboard or keyboard card error. |
| 1 beep, display does not display or displays incorrectly | Video display circuit. |
Macintosh Startup Sound
| Minus | Error |
|---|---|
| Error tone (2 different tones) | Problem with logic board or SCSI bus. |
| Boot chime, drive spins, no video | Problem with video controller. |
| Power on, no beep | Logic board problem. |
| High, 4 higher tones | Problem with SIMM. |
Phoenix BIOS Code
Below are the beep codes for Phoenix BIOS Q3.07 or 4.x.
| Beep Code | Description or part to be checked |
|---|---|
| 1-1-1-1 | Beep code not confirmed. Reseat the RAM chip or replace the RAM chip if possible. |
| 1-1-1-3 | Verify real mode. |
| 1-1-2-1 | Get CPU type. |
| 1-1-2-3 | Initialize system hardware. |
| 1-1-3-1 | Initialize chipset registers with initial POST values. |
| 1-1-3-2 | Set POST flag in place. |
| 1-1-3-3 | Initialize CPU registers. |
| 1-1-4-1 | Initialize cache to initial POST value. |
| 1-1-4-3 | Initialize I/O values. |
| 1-2-1-1 | Initialize power management process. |
| 1-2-1-2 | Load the replacement register with the original POST value. |
| 1-2-1-3 | Go to UserPatch0. |
| 1-2-2-1 | Initialize keyboard driver. |
| 1-2-2-3 | Check BIOS ROM. |
| 1-2-3-1 | Initialize the 8254 timer. |
| 1-2-3-3 | Initialize the 8237 DMA controller. |
| 1-2-4-1 | Programmable interrupt driver reset. |
| 1-3-1-1 | Check DRAM refresh capability. |
| 1-3-1-3 | Check the 8742 keyboard driver. |
| 1-3-2-1 | Set ES segment to register 4GB. |
| 1-3-3-1 | DRAM Automation. |
| 1-3-3-3 | Clear 512K RAM. |
| 1-3-4-1 | Check 512 base address lines. |
| 1-3-4-3 | Check 512K basic memory. |
| 1-4-1-3 | Check CPU bus clock frequency. |
| 1-4-2-4 | Re-initialize the chipset. |
| 1-4-3-1 | Protect system BIOS ROM. |
| 1-4-3-2 | Re-initialize cache. |
| 1-4-3-3 | Cache automation. |
| 1-4-4-1 | Advanced chipset register configuration. |
| 1-4-4-2 | Load the replacement registers with CMOS values. |
| 2-1-1-1 | Set initial CPU speed. |
| 2-1-1-3 | Initialize the interrupt vector. |
| 2-1-2-1 | Initiate BIOS interrupt processes. |
| 2-1-2-3 | Check ROM copyright notice. |
| 2-1-2-4 | Initialize the manager for PCI option ROMs. |
| 2-1-3-1 | Check video configuration with CMOS. |
| 2-1-3-2 | Initialize bus PCI và các thiết bị. |
| 2-1-3-3 | Initialize tất cả các bộ điều hợp (adapter) video trong hệ thống. |
| 2-1-4-1 | Protect video BIOS ROM. |
| 2-1-4-3 | Display thông báo bản quyền. |
| 2-2-1-1 | Display loại và tốc độ CPU. |
| 2-2-1-3 | Check bàn phím. |
| 2-2-2-1 | Thiết lập thao tác bấm phím nếu đã được kích hoạt. |
| 2-2-2-3 | Kích hoạt bàn phím. |
| 2-2-3-1 | Check các gián đoạn bất ngờ. |
| 2-2-3-3 | Display lời nhắc Press F2 to enter SETUP . |
| 2-2-4-1 | Check RAM từ 512 đến 640 k. |
| 2-3-1-1 | Check memory mở rộng. |
| 2-3-1-3 | Check các dòng địa chỉ memory mở rộng. |
| 2-3-2-1 | Chuyển đến UserPatch1. |
| 2-3-2-3 | Định configuration các register memory cache nâng cao. |
| 2-3-3-1 | Kích hoạt memory cache bên ngoài và CPU. |
| 2-3-3-3 | Display kích thước memory cache ngoài. |
| 2-3-4-1 | Display thông báo protect. |
| 2-3-4-3 | Display các phân đoạn không dùng một lần. |
| 2-4-1-1 | Display thông báo lỗi. |
| 2-4-1-3 | Check lỗi configuration. |
| 2-4-2-1 | Check đồng hồ thời gian thực. |
| 2-4-2-3 | Check lỗi bàn phím. |
| 2-4-4-1 | Thiết lập vectơ ngắt phần cứng. |
| 2-4-4-3 | Check bộ vi xử lý còn lại (nếu có). |
| 3-1-1-1 | Tắt cổng I/O trên bo mạch. |
| 3-1-1-3 | Phát hiện và cài đặt các cổng RS232 ngoài. |
| 3-1-2-1 | Phát hiện và cài đặt các cổng song song bên ngoài. |
| 3-1-2-3 | Initialize lại các cổng I/O tích hợp. |
| 3-1-3-1 | Initialize vùng dữ liệu BIOS. |
| 3-1-3-3 | Initialize vùng dữ liệu BIOS mở rộng. |
| 3-1-4-1 | Initialize bộ điều khiển đĩa mềm. |
| 3-2-1-1 | Initialize bộ điều khiển đĩa cứng. |
| 3-2-1-2 | Initialize bộ điều khiển đĩa cứng bus cục bộ. |
| 3-2-1-3 | Chuyển đến UserPatch2. |
| 3-2-2-1 | Vô hiệu hóa dòng địa chỉ A20. |
| 3-2-2-3 | Xóa register phân đoạn ES lớn. |
| 3-2-3-1 | Tìm kiếm các ROM tùy chọn. |
| 3-2-3-3 | Protect các ROM tùy chọn. |
| 3-2-4-1 | Thiết lập tính năng quản lý năng lượng. |
| 3-2-4-3 | Thiết lập tính năng ngắt phần cứng. |
| 3-3-1-1 | Đặt thời gian trong ngày. |
| 3-3-1-3 | Check khóa phím. |
| 3-3-3-1 | Xóa dấu nhắc F2. |
| 3-3-3-3 | Quét F2 key stroke. |
| 3-3-4-1 | Vào thiết lập CMOS. |
| 3-3-4-3 | Xóa POST flag. |
| 3-4-1-1 | Check lỗi. |
| 3-4-1-3 | Quá trình POST đã xong, chuẩn bị khởi động hệ điều hành. |
| 3-4-2-1 | Một tiếng bíp. |
| 3-4-2-3 | Check mật khẩu (tùy chọn). |
| 3-4-3-1 | Xóa bảng mô tả toàn cục. |
| 3-4-4-1 | Xóa trình check chẵn lẻ. |
| 3-4-4-3 | Xóa màn hình (tùy chọn). |
| 3-4-4-4 | Check lời nhắc về virus và sao lưu. |
| 4-1-1-1 | Thử boot với INT 19. |
| 4-2-1-1 | Lỗi gián đoạn trình xử lý. |
| 4-2-1-3 | Lỗi gián đoạn chưa xác định. |
| 4-2-2-1 | Lỗi gián đoạn đang chờ xử lý. |
| 4-2-2-3 | Initialize lỗi ROM tùy chọn. |
| 4-2-3-1 | Lỗi tắt máy. |
| 4-2-3-3 | Di chuyển khối mở rộng. |
| 4-2-4-1 | Lỗi tắt máy 10. |
| 4-3-1-3 | Initialize chipset. |
| 4-3-1-4 | Initialize bộ đếm refresh. |
| 4-3-2-1 | Check flash bắt buộc. |
| 4-3-2-2 | Check trạng thái HW của ROM. |
| 4-3-2-3 | BIOS ROM ổn. |
| 4-3-2-4 | Thực hiện check RAM hoàn chỉnh. |
| 4-3-3-1 | Initialize OEM. |
| 4-3-3-2 | Initialize bộ điều khiển ngắt. |
| 4-3-3-3 | Đọc trong mã khởi động. |
| 4-3-3-4 | Initialize tất cả vectơ. |
| 4-3-4-1 | Boot chương trình flash. |
| 4-3-4-2 | Initialize thiết bị boot. |
| 4-3-4-3 | Boot code được đọc là OK. |
| Tiếng báo hiệu với 2 tông khác nhau | Tốc độ quạt CPU thấp, có vấn đề với mức điện áp. |
How to Use Beep Code Viewer to Diagnose PC Beep Errors
Step 1:
First, download the software to your computer, then extract the ZIP archive with your preferred file extraction tool.
- fshare.vn/file/GHDFUPXGAP/
Step 2:
Open the extracted folder and double-click the Beep Code Viewer file. The portable program runs without a lengthy installation process.
Step 3:
You can also use the appropriate BIOS access key for your computer model to identify the BIOS manufacturer.
The program will display the available BIOS information.
After identifying the BIOS manufacturer and the beep pattern, select the matching pattern to view the likely error and recommended fix.
Beep Code Viewer helps identify the cause of unusual startup beeps so you can judge the severity of the hardware issue and choose an appropriate solution.
Follow the steps carefully and verify the result after making changes.
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