Nw8440 won't take power from AC adapters or docking station

I think my nw8440 laptop got hurt by a defective AC power brick - it caused the 'charging' light to flutter rapidly and a small clicking sound was heard from the laptop.  After that, the laptop will not run off of any external power input and will not charge the batteries (I have 2 other good AC bricks and a docking station, but now none work).  The laptop does sense the presence of the DC input though; a minute or so after a brick is plugged in, an HP assistant pops-up appears from the taskbar and shows something like "The smart adapter does not have enough power for this computer".  The laptop is obviously going to need repair, but is anyone familiar with the power components and able to advise on what I should expect?  (e.g., do these have any replaceable power parts or is it likely that the motherboard is fried?)

I was having the same problem. Installed the older driver from the link and now it wakes up!

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