Post Beeping Error General Codes
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starting the remainder of the boot process. If the computer passes the POST, the computer may give a single beep (some computers may beep twice) as it starts and continue to boot. However, if asus beep codes the computer fails the POST, the computer will either not beep or generate a
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beep code that tells the user the source of the problem. If your computer has an irregular POST or a beep code post error codes not mentioned below, follow the POST troubleshooting steps to determine the failing hardware component. AMI BIOS beep codes Award BIOS beep codes Dell beep codes IBM BIOS beep codes Macintosh startup tones Phoenix BIOS beep beep codes dell codes Motherboard help AMI BIOS beep codes Below are the AMI BIOS Beep codes that can occur. However, because of the wide variety of different computer manufacturers with this BIOS, the beep codes may vary. Beep Code Descriptions 1 short DRAM refresh failure 2 short Parity circuit failure 3 short Base 64K RAM failure 4 short System timer failure 5 short Process failure 6 short Keyboard controller Gate A20 error
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7 short Virtual mode exception error 8 short Display memory Read/Write test failure 9 short ROM BIOS checksum failure 10 short CMOS shutdown Read/Write error 11 short Cache Memory error 1 long, 3 short Conventional/Extended memory failure 1 long, 8 short Display/Retrace test failed two-tone siren Low CPU Fan speed, Voltage Level issue AWARD BIOS beep codes Below are Award BIOS Beep codes that can occur. However, because of the wide variety of different computer manufacturers with this BIOS, the beep codes may vary. Beep Code Description 1 long, 2 short Indicates a video error has occurred and the BIOS cannot initialize the video screen to display any additional information 1 long, 3 short Video card not detected (reseat video card) or bad video card Beeps repeating endlessly RAM problem. Repeated high frequency beeps while PC is running Overheating processor (CPU) Repeated beeps alternating high & low frequency Issue with the processor (CPU), possibly damaged If any other correctable hardware issues are found, the BIOS displays a message. Dell beep codes Beep Code Description 1 beep BIOS ROM corruption or failure 2 beeps Memory (RAM) not detected 3 beeps Motherboard failure 4 beeps Memory (RAM) failure 5 beeps CMOS Battery failure 6 beeps Video card failure 7 beeps Bad process
by introducing more precise citations. (October 2010) (Learn how and when to remove this template message) The first stage of a typical POST operation. (AMI BIOS) The second stage of a POST. Sometimes, it is intel beep codes shown 'Boot from CD'. (AMI BIOS) A power-on self-test (POST) is a process performed beep codes list by firmware or software routines immediately after a computer or other digital electronic device is powered on. This article mainly deals
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with personal computers, but many other embedded systems such as those in major appliances, avionics, communications, or medical equipment also have self-test routines which are automatically invoked at power-on. The results of tests run http://www.computerhope.com/beep.htm by the POST may be displayed on a panel that is part of the device, output to an external device, or stored for future retrieval by a diagnostic tool. Since a self-test might detect that the system's usual human-readable display is non-functional, an indicator lamp or a speaker may be provided to show error codes as a sequence of flashes or beeps. In addition to running tests, the POST https://en.wikipedia.org/wiki/Power-on_self-test process may also set the initial state of the device from firmware. In the case of a computer, the POST routines are part of a device's pre-boot sequence and only once they complete successfully is the bootstrap loader code invoked to load an operating system. Contents 1 IBM-compatible PC POST 1.1 Progress and error reporting 1.1.1 Original IBM POST beep codes 1.1.2 POST AMI BIOS beep codes 1.1.3 POST beep codes on CompTIA A+ certification exam 1.1.4 IBM POST diagnostic code descriptions 2 Macintosh POST 2.1 Old World Macs (until 1998) 2.2 New World Macs (1998–1999) 2.3 New World Macs (1999 onward) and Intel-based Macs 3 Amiga POST 3.1 POST sequence of Amiga 3.2 Sequence for all main Amiga models 3.3 Color screens scheme 3.4 Sequence for A4000 3.4.1 Correct tests color sequence scheme 3.4.2 Failed tests color scheme 3.5 Amiga keyboard LED error signals 4 See also 5 References 6 External links IBM-compatible PC POST[edit] See also: Booting §Boot sequence of IBM PC compatibles In IBM PC compatible computers, the main duties of POST are handled by the BIOS, which may hand some of these duties to other programs designed to initialize very specific peripheral devices, notably for video and SCSI initialization. These other duty
Home Page | Troubleshooting | General Description, AMI, Award, Phoenix, Links General Description Beeps are emitted from a computer during the boot process when some problem is encountered and can be used to troubleshoot a dead computer. They indicate problems such as bad memory, bad keyboard or bad http://www.techadvice.com/tech/B/BeepCode.htm motherboard. Usually if you hear beeps there is something real wrong and you should immediately turn off the computer and perform some troubleshooting. See the section below for your BIOS type (AMI, Award, Phoenix) POST Beeping Error General Codes Bad https://kb.iu.edu/d/afzy Motherboard - 1 long and 1 short beep Disk drive related problem / Video card problem - 1 short beep then nothing happens Bad video card - 1 long and 2 short beeps Bad power supply - 1) continuous beeps, beep codes 2) non-stop short beeps Bad memory - 3 short beeps These codes DO vary from one manufacturer to another. In time this section will break them down by manufacturer. Also almost all computers list the appropriate codes in the User's manual under technical information or the troubleshooting section, so be sure to check the manual and verify what the codes mean. AMI AMI Beep Codes - ...Listing of Codes @ AMI Link, Except for beep code #8, these codes post beeping error are always fatal. 1 beep Refresh failure - try reseating the memory, if the error still occurs, replace the memory 2 beeps Parity error - try reseating the memory, if the error still occurs, replace the memory 3 beeps Base 64K memory failure - try reseating the memory, if the error still occurs, replace the memory 4 beeps Timer not operational, system board bad 5 beeps Processor error, system board bad 6 beeps 8042 - gate A20 failure, try reseating the keyboard controller chip 7 beeps Processor exception interrupt error, system board bad 8 beeps Display memory video card read/write failure error, replace video memory or video card 9 beeps ROM checksum error, faulty BIOS chip(s), must replace them 10 beeps CMOS shutdown register read/write error, system board bad 11 beeps Cache memory bad If no beeps are heard and no display is on the screen, its most likely the power supply. Check for Keyboard lights or for hard drive/floppy drive lights. If lights come on then power supply is good. Next, inspect the motherboard for loose components. A loose or missing CPU, BIOS chip, Crystal Oscillator, or Chipset chip will cause the motherboard not to function. If you get lights then it could be one of the I/O cards. Try removing each card one at a time and restarting the computer. (these codes are from the AMI web site) Award Award BIOS Versions 2
beeps and fails to boot, what do the beeps mean? On startup, computers perform a Power-on Self Test, commonly referred to as a POST. If problems are found while booting, you can usually diagnose them using the error codes displayed on the screen. However, if nothing displays on the screen, the computer might use sounds (i.e., beep codes) to tell you what is wrong. Many of these errors indicate hardware problems that a service technician should fix. However, some errors are easily fixed. For example, keyboard controller errors often mean that your keyboard isn't plugged in. Following are beep codes for some common brands of BIOS for PCs. For information about Mac beep codes or startup tones, see Apple Support's About Mac computer startup tones. Note: Many BIOSes will have different beep codes even if they appear to be from the same manufacturer. This is because motherboard manufacturers reprogram codes to reflect their own customizations. You can often go to the website for the motherboard's manufacturer to find the updated codes, but you may find cases where the manufacturer simply does not document the changes. For more about beeps and error codes, see ComputerHope.com's Computer POST and beep codes. On this page: AwardAMI (American Megatrends)AST BIOSCompaqPhoenixIBM DesktopIBM ThinkPadMylexQuadtel BIOS Award Award BIOSes typically use more screen errors than beep codes. For Award BIOSes manufactured by Phoenix Technologies, note the following from the Phoenix Technologies AwardBIOS Error Messages page: "The only AwardBIOS beep code indicates that a video error has occurred and the BIOS cannot initialize the video screen to display any additional information. This beep code consists of a single long beep followed by two short beeps. Any other beeps are probably RAM (Random Access Memory) problems." Awa