Your great techs usually strip it down to the motherboard and go over the power jack area with a microscope and touch up the solder work. Then they clean, apply fresh heat sink compound and put it back together and hope. If the GENERIC RESET doesn't help, find a great tech.
I have a laptop...and this is what happened to the laptop...I had a song file on my laptop, ran it thru Kapersky and it came up clean. I went to listen to a song using Windows Media Player because it was a windows media player file and it said when I opened WMP that it needed to update the WMP & Codec? So, I think maybe that was my mistake because it updated, went to restart and never did restart. Now, it tries to restart, the lights flash when I hold done the power button,I hear it try to start and then it shuts off. It looks like the laptop is charging because the battery light is on. I removed the battery /power supply and held down the power button to discharge any 'old power', still does the same scenario. I also noticed a faint beepm beep, beep on the laptop. When I remove the battery the beep goes away but on the same note when I leave the battery in and remove the power supply the beeping stops..But It is a constant faint beep, beep, beep......Also, I had a hard drive reader, took out the hard drive, ran a scan on it using Sophus and it came up clean. Another thing that was happening w/laptop is that it wouldn't read the power source consistently about a week or so before all this has happened. Suggestions????