Post 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 twice) as it starts and continue to boot. However, if the computer fails
Post Error Codes
the POST, the computer will either not beep or generate a beep code that tells parity circuit failure the user the source of the problem. If your computer has an irregular POST or a beep code not mentioned below, follow
Asus Beep Codes
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 codes Motherboard help AMI BIOS beep dram refresh failure 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 7 short Virtual mode exception error 8 short Display gigabyte beep codes 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 processor (CPU) For other Dell beep codes, please refer to Dell's Beep Codes and PSA Diagnostics Chart page.
an audio beep or in the form of a code number flashed across the screen. With this audio code in hand, you can determine what part of the system is having problems and find
Beep Codes Dell
a solution. The pattern of beeps whether its the number of beeps or the length hp beep codes of those beeps will give you an indication of the actual problem. Its a distress signal from the computer in a morse code
System Timer Failure
like pattern. Unless you have a diagnostic card to tell you more about the particular problem, you will have to use the charts below to decipher the computer error and get your machine back up and running. http://www.computerhope.com/beep.htm Standard IBM Error Codes | AMI Beep Codes | Phoenix Beep Codes | Award Beep Codes | LED Diagnostic Lights | BIOS UpgradesStandard Original IBM POST Error Codes 1 short beep Normal POST - system is ok 2 short beeps POST Error - error code shown on screen No beep Power supply or system board problem Continuous beep Power supply, system board, or keyboard problem Repeating short beeps Power supply or system board problem http://www.pchell.com/hardware/beepcodes.shtml 1 long, 1 short beep System board problem 1 long, 2 short beeps Display adapter problem (MDA, CGA) 1 long, 3 short beeps Enhanced Graphics Adapter (EGA) 3 long beeps 3270 keyboard card IBM POST Diagnostic Code Descriptions 100 - 199 System Board 200 - 299 Memory 300 - 399 Keyboard 400 - 499 Monochrome Display 500 - 599 Color/Graphics Display 600 - 699 Floppy-disk drive and/or Adapter 700 - 799 Math Coprocessor 900 - 999 Parallel Printer Port 1000 - 1099 Alternate Printer Adapter 1100 - 1299 Asynchronous Communication Device, Adapter, or Port 1300 - 1399 Game Port 1400 - 1499 Color/Graphics Printer 1500 - 1599 Synchronous Communication Device, Adapter, or Port 1700 - 1799 Hard Drive and/or Adapter 1800 - 1899 Expansion Unit (XT) 2000 - 2199 Bisynchronous Communication Adapter 2400 - 2599 EGA system-board Video (MCA) 3000 - 3199 LAN Adapter 4800 - 4999 Internal Modem 7000 - 7099 Phoenix BIOS Chips 7300 - 7399 3.5" Disk Drive 8900 - 8999 MIDI Adapter 11200 - 11299 SCSI Adapter 21000 - 21099 SCSI Fixed Disk and Controller 21500 - 21599 SCSI CD-ROM System AMI BIOS Beep Codes 1 Short Beep One beep is good! Everything is ok, that is if you see things on the screen. If you don't see anything, check your monitor and video card first. Is everything
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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." 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 B