HP vectra vl420, Техническое справочное руководство

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BIOS Overview
HP e-DiagTools Preboot Diagnostics (Beep Codes)
When your PC starts up, its BIOS performs a Power-on Self Test (POST) to test your hardware
configuration for any problems. If a problem is detected during the POST, an error is displayed on your
PC’s monitor.
If, however, your PC is unable to display an error message (for example, when your graphics controller
has failed), it will emit a buzzing sound. This is the e-DiagTools preboot diagnostic. In the event of a
problem with your PC immediately after the buzzing sound, a series of beeps is emitted.
If you hear a series of beeps, you should count them as this will help you detect the cause of the problem.
Number of Beeps Meaning
0
•
If you hear the buzzing audio signal: system OK
•
No buzzing audio signal: no power, PC is unplugged, power supply is down or system board has failed.
1 Processor absent, not correctly connected or processor socket not closed
2 Power supply is in protected mode
3 No memory, bad memory modules, incompatible memory module
4 Graphics solution problem
5 PnP/PCI initialization problem
6 Corrupted BIOS. You need to activate crisis recovery procedure.
7 Defective system board
Note that for Memory (code 3), Video Card (code 4), and PnP/PCI (code 5) errors, e-DiagTools preboot
diagnostic will only detect them after a 15-second timeout.
If you miss the beep code, turn off the PC. Then press the on/off power button for five seconds or more
and listen for the signal again.
The e-DiagTools preboot diagnostics, as well as emitting a beep sequence, also encodes troubleshooting
information (such as the PC model, serial number and failing components) into a coded audio signal.
During a support call, this coded signal can then be decoded by the HP Service Provider to provide
immediate and effective assistance.
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