The
power receptacle in the laptop (where you plug in the AC adapter cord)
might be damaged. In order to diagnose this problem, please follow the
diagnosis outlined in this article:
http://www.fixya.com/support/r6395191-troubleshooting_laptop_power_failures_ac
Next,
if you made sure that it is not a power receptacle problem, then you
will have to disassemble your laptop, removing one component at a time
& testing. First start by removing the battery, hard drive, RAM
modules, CD/DVD drive, wireless card adapter, .... etc. Continue
removing the parts till you only have the motherboard, testing after you
remove each component. Once you get the power LED on the power adapter
to glow when plugged to the laptop, you then know that the component you
just removed is the faulty one that needs to be replaced. If you reach
the point where all components have been removed & only the
motherboard is remaining, then the mother board is the defective part
that needs to be replaced
Do you get any lights? Does it show if the battery is charging at all? Try plugging it in without the battery.
You also may have a bad powercord or loose jack inside the computer where it plugs in. See if you jiggle it where it plugs in if any lights come on to indicate it has power or is charging the battery.
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