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Repair guides and troubleshooting for the HP ProBook 4440s. Featuring a 14" screen and Windows 7 operating system, the ProBook 4440s can be identified by model number C6Z33UT.

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Laptop not turning on after pluggin in the charger

Whenever I plug in the charger, the laptop's power button's light automatically turns on & the fan starts running heavily & after 5 seconds, the power turns off & on again. The cycle keeps on repeating itself until I plug off the charger.

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Hi @gojirafan ,

Check the output voltage of the charger, using a Voltmeter.

Here are the specs:

19.0 V dc @ 4.74 A – 90 W or 18.5 V dc @ 3.5 A - 65 W depending on what variant you have

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