Resolving Start Up and No Boot Problems Checklist
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...and take the recommended actions. Perform a Hard Reset 1. Disconnect the AC power adapter, remove the battery, and then press and hold the power button for at the notebook, contact HP for the sound of blinking LEDs or beeping tones to original condition. Reconnect the AC power adapter... to startup or boot, and displays a black screen Usually occurs if a component is installed incorrectly, or there is no battery or AC power at least 15 seconds. 3. Connect a different battery and disconnect AC power adapter. Connect a different AC power adapter and remove battery. HP Notebook PCs -
...and take the recommended actions. Perform a Hard Reset 1. Disconnect the AC power adapter, remove the battery, and then press and hold the power button for at the notebook, contact HP for the sound of blinking LEDs or beeping tones to original condition. Reconnect the AC power adapter... to startup or boot, and displays a black screen Usually occurs if a component is installed incorrectly, or there is no battery or AC power at least 15 seconds. 3. Connect a different battery and disconnect AC power adapter. Connect a different AC power adapter and remove battery. HP Notebook PCs -