T his tutorial is needed you solve the problem to press power button even when there's no power on. I will show you how to find the failure reason for system shutdown of a laptop, but the tips are not aiming for some special brands or models, extremely automatic work for most computers.
the voltage output of your new adapter should be exactly same as previous one's.
Such as 19V hp AC Adapter, you'd better use only it of 19V, and the amperage of your new adapter also the treatment of anxiety same or obviously any good little higher, such as 4.74A, you should use 4.74 -4.9A.
If the measure above is useless, and laptop computer is still at dead state, then probably motherboard gets something wrong, or DC power Jack contains problem. Actually the latter one stands a decent chance, the actual motherboard cannot get any power over AC adapter. In this case, you'd have to disassemble laptop computer and replace the DC power Port. Please take a look at this article: Tips of Laptop DC Jack Repair
Laptop is basically dead, and new laptop battery cannot charge!
When you plug your past oower adapter and press on the strength button, however the laptop is without a response, no starting sound, no LED light, no fan rotating, except black screen, nothing at all is else.in all, the laptop is completely broken, then under this circumstance, what might you do?
1.Ensure your wall outlet is working, which laptop AC adapter could get power by the outlet. But exactly could the remote feature whether there's power or even otherwise? You'd better find a reading lamp with plug to it, check whether the bulb was lit after you press power button. If you fail to assure, then try another wall retail outlet.
2.Unplug power cord from an AC adapter for laptop, and then plug in the power cord back forcibly, to try turning through the laptop remember.Most power cord has a bad connected to power adapter's outlet, which caused the problem, that means you should ensure that the two ends of the cord are completely attached to the wall outlet and AC adapter power outlet.
3.If the ability lights still off, then you must change a new power cord and test the AC adapter laptop again, guarantee the input voltage is normal, you is able to use voltage meter to test the power adapter.
4.All right, now our adapter is good, and then it could output correct voltage. In this circumstance, unplug the power adapter to the laptop, and take away the battery, then holding press capability button to wait patiently for about 1 minute, after that, plugged into the adapter and attempt starting on laptop computer again.
5. Now, your test result is: the laptop still cannot start. Imagine that the AC adapter was bad, if you're to change it with a normal one, you would have to follow the next rule: