Long beep coming from my CPU

Long beep coming from my CPU

The first to do is to count the number of beeps; each beeping sound has a meaning, beeping sound usually indicate a problem with you Bios, without your Bios working properly your computer won’t work since it’s responsible for loading the operating system and hardware device configurations.

Every time you power on your computer the BIOS run the POST (Power on Self Test), a normal PC produces a single beep to notify you that test is successful. The following is a list of BIOS beep sound from AMI, Phoenix and Award BIOS manufacturers.

AMI; beeps is of the same length and pitch but the number varies:

• One Beep – Bad memory
• Two Beeps -Bad memory
• Three Beeps-Bad memory
• Four Beeps -Bad motherboard (timer malfunction)
• Five Beeps- Bad processor
• Six Beeps – Bad CPU or Motherboard
• Seven Beeps- Bad processor
• Eight Beeps – Video memory error Bad video card or memory
• Nine Beeps – Bad BIOS
• Ten Beeps – Bad motherboard
• Eleven Beeps – bad CPU or motherboard

Phoenix; each beeps sequence has a rhythm , e.g. 1-1-2 is beep <pause> beep <pause> <two beeps>

• 1 – 1 – 2 CPU / motherboard failure Bad CPU / motherboard
• 1 – 1 – 3 CMOS read/write failure Bad motherboard
• 1 – 1 – 4 BIOS ROM failure Bad BIOS chip
• 1 – 2 – 1 Timer failure Bad motherboard
• 1 – 2 – 2 DMA failure Bad motherboard
• 1 – 2 – 3 DMA failure Bad motherboard
• 1 – 3 – 1 Memory refresh failure Bad memory
• 1 – 3 – 2 64K memory failure Bad memory
• 1 – 3 – 3 64K memory failure Bad memory
• 1 – 3 – 4 64K memory failure Bad memory
• 1 – 4 – 1 Address line failure Bad memory
• 1 – 4 – 2 Parity error Bad memory
• 1 – 4 – 3 Timer failure Bad motherboard
• 1 – 4 – 4 NMI port failure Bad motherboard
• 2 – 1 – 1 64K memory failure Bad memory
• 2 – 1 – 2 64K memory failure Bad memory
• 2 – 1 – 3 64K memory failure Bad memory
• 2 – 1 – 4 64K memory failure Bad memory
• 2 – 2 – 1 64K memory failure Bad memory
• 2 – 2 – 2 64K memory failure Bad memory
• 2 – 2 – 3 64K memory failure Bad memory
• 2 – 2 – 4 64K memory failure Bad memory
• 2 – 3 – 1 64K memory failure Bad memory
• 2 – 3 – 2 64K memory failure Bad memory
• 2 – 3 – 3 64K memory failure Bad memory
• 2 – 3 – 4 64K memory failure Bad memory
• 2 – 4 – 1 64K memory failure Bad memory
• 2 – 4 – 2 64K memory failure Bad memory
• 2 – 4 – 4 64K memory failure Bad memory
• 2 – 4 – 4 64K memory failure Bad memory
• 3 – 1 – 1 Slave DMA failure Bad motherboard
• 3 – 1 – 2 Master DMA failure Bad motherboard
• 3 – 1 – 3 Interrupt controller failure Bad motherboard
• 3 – 1 -4 Slave IC failure Bad motherboard
• 3 – 2 -2 Interrupt Controller failure Bad motherboard
• 3 – 2 – 4 Keyboard controller failure Bad motherboard
• 3 – 3 – 1 CMOS battery failure Bad CMOS battery
• 3 – 3 – 2 CMOS configuration error Incorrect setting
• 3 – 3 – 4 Video memory failure Bad video card or memory
• 3 – 4 – 1 Video unit failure Bad video card or memory
• 4 – 2 – 1 Timer failure Bad motherboard
• 4 – 2 – 2 CMOS shutdown failure Bad motherboard
• 4 – 2 – 3 Gate A20 failure Bad motherboard
• 4 – 2 – 4 Unexpected interrupt Bad processing
• 4 – 3 – 1 RAM test failure Bad memory
• 4 – 3 – 3 Timer failure Bad motherboard
• 4 – 3 – 4 RTC failure Bad motherboard
• 4 – 4 – 1 Serial port failure Bad motherboard
• 4 – 4 – 2 Parallel port failure Bad motherboard
• 4 – 4 – 3 Coprocessor failure Bad motherboard or CPU.
• 9 – 2 – 1 Video adapter incompatibility Use a different brand of video card

Award BIOS Beep Codes

Award BIOS uses beeps of varying duration. A long beep lasts for 2 seconds while a short beep lasts only 1 second. Award BIOS also uses beeps of different frequency to indicate critical errors.

If an Award BIOS detects that the CPU is overheating it may play a high pitched repeating beep while the computer is running. BEEP CODE MEANING POSSIBLE CAUSE 1 Long, 2 Short Video adapter failure Bad video adapter Repeating (Endless loop) Memory error Bad memory or bad connection 1 Long, 3 Short Video adapter failure Bad video adapter or memory High frequency.

Beeps (while running) CPU is overheating CPU fan failure Repeating High, Low beeps CPU failure Bad processor.