Compaq Evo D310 micro desktop pc
system board switches
| Switch | Function | Default |
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On | Reserved | Off |
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Off | Reserved – Normal operation |
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| On | Clears CMOS and passwords |
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5 |
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| (to reload the Setup program defaults) | Off |
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| Off | Normal operation |
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6 |
| On | Clears User and Administrator passwords | Off |
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| Off | Normal operation |
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| On | BIOS recovery mode: forces booting in the BIOS boot |
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7 |
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| block area | Off |
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| Off | Normal operation |
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8 |
| On | Not used | Off |
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| Off | Not Used - Normal operation |
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9 |
| On | Normal operation (Software boot block protection) | On |
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| Off | Hardware boot block protection |
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10 |
| On | Not used | Off |
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| Off | Not Used - Normal operation |
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BIOS history
For the latest BIOS, the flasher utility program, and the BIOS history connect to
http://www.hp.com/go/support/
pre-boot diagnostic beep codes
Number | Meaning |
of Beeps |
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0 | If you hear the buzzing signal: system OK |
| No buzzing audio signal: no power, PC is unplugged, power supply is |
| down or system board has failed |
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1 | Processor absent, not correctly connected or ZIF (Zero Insertion Force) |
| socket not closed |
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2 | Power supply is in protected mode. This error does not necessarily |
| indicate a power supply error (e.g. short circuit on the sytem board). |
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3 | No memory, bad memory modules, incompatible memory module |
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4 | Graphics solution problem |
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5 | PnP/PCI initialization problem |
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6 | Corrupted BIOS. You need to activate crisis recovery procedure (refer to |
| release note provided with BIOS). |
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7 | Defective system board |
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Compaq Evo D310 micro desktop pc