Beep Codes

S10

S11

S12

S13

S14

S15

3- Solid

4- Off

1- Off

2- Off

3- Solid

4- Solid

1- Off

2- Solid

3- Off

4- Off

1- Off

2- Solid

3- Off

4- Solid

1- Off

2- Solid

3- Solid

4- Off

1- Off

2- Solid

3- Solid

4- Solid

1- Solid

2- Off

3- Off

4- Off

1- Solid

2- Off

3- Off

4- Solid

1- Solid

2- Off

3- Solid

4- Off

1- Solid

2- Off

3- Solid

4- Solid

1- Solid

2- Solid

3- Off

4- Off

1- Solid

2- Solid

3- Off

4- Solid

1- Solid

2- Solid

3- Solid

4- Off

1- Solid

2- Solid

3- Solid

4- Solid

CPU

MEM

PCI

VID

STO

USB

MEM

MBF

MEM

PRV

CFG

POV

STD

CPU

Memory

PCI device

Video Card

Storage

USB

Memory

System board

Memory

Other post- video activity

Boot hand off

failure was detected.

Memory subsystem configuration activity is in progress. Appropriate memory modules were detected but a memory failure has occurred.

PCI device configuration activity is in progress or PCI device failure was detected.

Video subsystem configuration activity in progress or video subsystem failure.

Storage device configuration in progress or storage subsystem failure.

USB subsystem configuration activity in progress or USB subsystem failure.

Memory subsystem configuration activity is in progress. No memory modules were detected.

Fatal system board failure detected.

Memory subsystem configuration activity is in progress. Memory modules have been detected but appear to be incompatible or in an invalid configuration.

Indicates routine system activity preceding video initialization.

System resource configuration in progress.

Reserved for future use. This pattern is being considered to indicate the Visual Off state on the Dimension systems.

Indicates routine system activity subsequent to video initialization.

Indicates End of POST process. Lights are normally in this state briefly as POST completes. Once the hand-off to the OS is done, the lights turn off and transition to S0e state.

When errors occur during a boot routine that cannot be reported on the monitor, the computer may emit a beep code that identifies the problem. The beep code is a pattern of sounds: for example, one beep followed by a second beep, then followed by a burst of three beeps (code 1-1-3) means that the computer was unable to read the data in nonvolatile random-access memory (NVRAM). If the system loses power and beeps constantly when you turn it back on, the BIOS is probably corrupted.