make this test and fix it. God bless you
Check your laptop's AC adapter. Ensure the laptop's AC adapter is snugly plugged into the port on the back of
the . Also, check its connection into either the wall socket or the surge
protector, depending on your setup. Make sure the AC adapter is securely in one
of these outlets and not loose. Also, if the adapter is plugged directly into
the wall, try another outlet. Your existing outlet may be blown.
Check your monitor brightness settings. Sometimes these
settings get accidentally turned all the way down, which results in what
appears to be a dead laptop battery or malfunctioning power supply, but is
really just a simple fix. Your laptop
has dedicated brightness keys at the top of the keyboard, directly above the
numeric keys. Adjust the brightness settings here.
Look at the battery indicator light if your laptop appears to be out of battery or
suffering a power failure. If it is not flashing or indicating a power problem,
your laptop's "LCD closed switch" may be malfunctioning. This switch
acts as a sensor which normally judges whether your laptop is open or closed.
Sometimes this switch gets stuck in the "closed" position, resulting
in the laptop believing it is shut and thus the monitor's back-light staying
off. This switch is located right beside either the left or right hinge at the
bottom of your laptop's display . Tap this switch multiple times with your
finger to attempt to free it up and get it out of the closed position.
Consider whether your laptop's battery has completely died and needs to be replaced.
Average laptop batteries last for approximately 1000 charges, after which point
they either gradual deteriorate and have trouble holding a charge, or simply
Eventually your laptop's battery will have to replaced, and if none of the other
troubleshooting steps yielded results this is likely the source of your
perceived power supply problems. Flip over your laptop and locate the horizontal outline of the battery, which
will be at the top center of the bottom of your computer.
Notice the battery release mechanism on the bottom of your
laptop, which should be directly below
the horizontal outline of the battery. Slide this release mechanism to the left
to disengage the battery and gently pop it out. The laptop's power supply may now be replaced.