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POSTcodes (AKA BIOS BEEP codes)

 

Οταν ο υπολογιστης ανοιγει ή κανει reboot το BIOS κανει ενα τεστ που λεγεται power-on self test (POST) για να ελεγξει το hardware του υπολογιστη και οτι ολα τα υποσυστηματα λειτουργουν κανονικα. Κανονικα το POST αν υπαρξει προβλημα θα εμφανισει μηνυμα λαθους. Αν ομως το BIOS εντοπισει προβλημα πριν τον ελεγχο της καρτας γραφικων θα κανει μια σειρα απο ηχους(Beeps). Αναλογα το προβλημα θα γινουν διαφορετικοι ηχοι. Παρακατω ειναι μια λιστα για διαφορα συστηματα που θα σας βοηθησει να εντοπισετε το προβλημα.
 Because there are many brands of BIOS, there are no standard beep codes for every BIOS.

The two most-used brands are AMI (American Megatrends International) and Phoenix.

Below are listed the beep codes for AMI systems, and here are the beep codes for Phoenix systems.

AMI Beep Codes

Beep Code Meaning

1 beep DRAM refresh failure. There is a problem in the system memory or the motherboard.

2 beeps Memory parity error. The parity circuit is not working properly.

3 beeps Base 64K RAM failure. There is a problem with the first 64K of system memory.

4 beeps System timer not operational. There is problem with the timer(s) that control functions on the motherboard.

5 beeps Processor failure. The system CPU has failed.

6 beeps Gate A20/keyboard controller failure. The keyboard IC controller has failed, preventing gate A20 from switching the processor to protect mode.

7 beeps Virtual mode exception error.

8 beeps Video memory error. The BIOS cannot write to the frame buffer memory on the video card.

9 beeps ROM checksum error. The BIOS ROM chip on the motherboard is likely faulty.

10 beeps CMOS checksum error. Something on the motherboard is causing an error when trying to interact with the CMOS.

11 beeps Bad cache memory. An error in the level 2 cache memory.

1 long beep, 2 short Failure in the video system.

1 long beep, 3 short A failure has been detected in memory above 64K.

1 long beep, 8 short Display test failure.

Continuous beeping A problem with the memory or video.

Phoenix Beep Codes

Phoenix uses sequences of beeps to indicate problems. The "-" between each number below indicates a pause between each beep sequence. For example, 1-2-3 indicates one beep, followed by a pause and two beeps, followed by a pause and three beeps. Phoenix version before 4.x use 3-beep codes, while Phoenix versions starting with 4.x use 4-beep codes.

4-Beep Codes

Beep Code Meaning

1-1-1-3 Faulty CPU/motherboard. Verify real mode.

1-1-2-1 Faulty CPU/motherboard.

1-1-2-3 Faulty motherboard or one of its components.

1-1-3-1 Faulty motherboard or one of its components. Initialize chipset registers with initial POST values.

1-1-3-2 Faulty motherboard or one of its components.

1-1-3-3 Faulty motherboard or one of its components. Initialize CPU registers.

1-1-3-4 Failure in the first 64K of memory.

1-1-4-1 Level 2 cache error.

1-1-4-3 I/O port error.

1-2-1-1 Power management error.

1-2-1-2

1-2-1-3 Faulty motherboard or one of its components.

1-2-2-1 Keyboard controller failure.

1-2-2-3 BIOS ROM error.

1-2-3-1 System timer error.

1-2-3-3 DMA error.

1-2-4-1 IRQ controller error.

1-3-1-1 DRAM refresh error.

1-3-1-3 A20 gate failure.

1-3-2-1 Faulty motherboard or one of its components.

1-3-3-1 Extended memory error.

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