When I try to open my laptop which type is HP EliteBook 8440p, the red lamp of charge starts to blink 8 times and the device doesn't start, can anyone help in
3 long beeps followed 4 short beeps and then says adapter no... - HP Support Community - 6407136
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HP Desktop PCs - Computer beeps or a light blinks during startup | HP® Support
HP Desktop PCs - Computer beeps or a light blinks during startup | HP® Support
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3 Long Beeps 4 Short (higher pitched) repeated 5 times; then... - HP Support Community - 6514739
