Boot Error 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 1 beep on startup twice) as it starts and continue to boot. However, if the computer
Motherboard 2 Beeps
fails the POST, the computer will either not beep or generate a beep code that tells the user one long beep the source of the problem. If your computer has an irregular POST or a beep code not mentioned below, follow the POST troubleshooting steps to determine the failing hardware component.
Bios 3 Beeps
AMI BIOS beep codes Award BIOS beep codes Dell beep codes IBM BIOS beep codes Macintosh startup tones Phoenix BIOS beep 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 continuous beep code 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 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 Iss
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
Post 4 Beeps
error codes displayed on the screen. However, if nothing displays on the screen, the computer
Dell Boot Error Codes
might use sounds (i.e., beep codes) to tell you what is wrong. Many of these errors indicate hardware problems that a service blue screen error codes 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 http://www.computerhope.com/beep.htm 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. https://kb.iu.edu/d/afzy 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." Award BIOSes not manufactured under Phoenix Technologies use the following beeps; this information is from the BIOS Central Award BIOS Beep Codes page: Beeps Meaning 1 long, 2 short Video adapter error: Bad or improperly seated video card Repeating beeps Memory error: Bad or improperly seated RAM 1 long, 3 short Bad video RAM or video card not present High-frequency beeps Overheated CPU: Check fans Repeating high/low beeps CPU: Improperly seated or defective CPU Back to top AMI (American Megatrends) The information below is from the BIOS Central AMI BIOS Beep Codes page. Beeps Meaning 1 short DRAM refresh failure 2 short Parity circuit failure in the first 64 KB of RAM: Likely a bad RAM IC, or pos
by introducing more precise citations. (October 2010) (Learn how and when to remove this template message) The first stage of a typical POST operation. https://en.wikipedia.org/wiki/Power-on_self-test (AMI BIOS) The second stage of a POST. Sometimes, it is shown 'Boot from CD'. (AMI BIOS) A power-on self-test (POST) is a process performed by firmware or software routines immediately after a computer or other digital electronic device is powered on. This article mainly deals with personal computers, but many other embedded systems such as those in major error codes appliances, avionics, communications, or medical equipment also have self-test routines which are automatically invoked at power-on. The results of tests run 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 boot error codes 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 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 keybo