HP Laptop Power Cord Troubleshooting
If your HP laptop isn't turning on, it is most likely one of two issues: the power cable or the battery. It is important to attempt to isolate an issue prior to calling customer service, as you will either be able to fix it yourself, or will be able to provide more useful information to the technical support agent.
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Test Electrical Outlet
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Plug a different device into the electrical outlet you are using. Occasionally, the issue is not with the laptop at all, but rather a bad power outlet.
Inspect the Power Cable
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Inspect the power cord using vision and touch. Check for any nicks or gashes in the cord, and feel for any possible issues such as a break in the wire inside.
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Check Power Cable Connection
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Verify that the power cable is properly plugged into the outlet, the laptop and the transformer box in the middle of the cable, if there is one.
Remove the Battery
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Power on the computer with the power cable plugged in but with the battery removed. This will determine if the battery is the cause of the problem.
Call the Manufacturer
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Once you have isolated the probable issue, or if none is evident, call HP customer service 24 hours a day, 7 days a week at (800) 474-6836.
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