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Can you tell where the sound is coming from? if so that oarts needs to be replaced. because it you get sounds from system, it means its nearing its end of life.
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It sounds like a loose connection in the charger cord or the AC jack. If the laptop is pulled by the cord it could have loosened/damaged the AC jack. If you remove the battery and only use the AC cord does the problem change? if you only use the battery and no AC cord does that change the problem? When Power is removed, without a proper shut down, the machine sees it as a crash therefore the disk check and black screen with boot options.
You say the unit produces cold air ??? where are you getting the cold air from???
If your fan does not run in any speed F1, F2 F3. and a funny smell sounds like the motor is bad
Mine works in F2, F3 but not in F1
There is a time delay on the stat to the AC unit, in addition the AC unit likely has one also, so immediate activation as desired isnt likely, however in 10 minutes of asking for AC if its not on still Id check the time delay fuses in the service disconnect at the AC unit, its a small grey box with the power cords running to and from it, there is 2 time delay fuses inside this box.
Please understand that the generator produces power from fuel with an engine wheras the invertor is one which genrerates power from a stored battery using the principle of frequency switching a DC source to induct and produce AC.
Now you can have an uninterupted power supply setting with the invertor backed up by the generator so that when the battery voltage goes down you can start and charge the invertor and also supply the extra energy .
the ratings of both must also be considered.
1) Unplug the AC Adapter from the notebook PC and remove from any port replicator or docking station.
2) Remove the battery from the notebook battery compartment
3) Press and hold the power button for about 20 seconds
NOTE: Holding down the power button while the computer is turned off drains any residual charge in the capacitors
4) Insert battery and plug the AC Adapter back into the notebook PC.
5) Press the power button to turn the notebook PC back on.
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