Periodically, you may experience issues using your HP D4-1140GO laptop computer. For example, the machine may not power on when you press the "Power" button on the machine. Several potential reasons (and solutions) for the problem exist, including checking the power adaptor and batter to ensure that both are working properly.
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Internal Power Supply
One reason why your DV4-1140 laptop won't boot is if the Internet power supply no longer works. For some users, sustained laptop use will help to wear out the internal power supply which connects the computer's power adaptor to the computer. One way to know whether the internal power supply no longer functions is to plug in your power adaptor. If the light next to the power adaptor fails to illuminate, the power supply is likely dead. However, before making this conclusion, plug in a different, working power supply to ensure that your adaptor works properly.
If your internal power supply works as expected, the power adaptor itself may have a problem, which may be as simple as the wall jack not receiving any electricity or the power adaptor itself no longer working. First verify that the power jack works by plugging another device into it, such as a fan, and then plug the power adaptor into it. If the power light illuminates, the machine is likely receiving power and the computer is not booting for some other reason.
A third reason why your computer may not power on is because the battery is dead. For example, if you charged your battery and plugged it into the computer and the computer fails to power on, the battery may not hold the charge, which is a common problem for older laptop computers and for users who never purchased a new battery for their older machines. Visit your computer manufacturer's website to purchase a new battery if desired.
If you suspect that your battery may be the cause of your computer's power issues, you can use a Windows application to plug in the adaptor and boot the machine. Your laptop has a program called "Total Care Advisor," which provides data about your machine. Part of "Total Care Advisor" is the battery check feature. According to the user manual for the machine, it examines the battery's cells for proper function and alerts you as to whether the battery is working properly. Access it by clicking "Start," "Help and Support," "Troubleshooting Tools," and "Battery Check."
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