That is, thanks for sharing this story. I have yet to advise using universal chargers for laptops. The risk is too high to not get the right charger.
That said, try the generic reset noted at link:
Hi all. I have a hp pavilion model 17-e117dx. The power needed for this laptop is 19.5V. I have a universal charger that can be switched from 10V to 20V. I had the computer charging at 19V while I was operating it. While in operation the universal charger was switched from 19V to 20V. This caused the computer to immediately shut down. Upon shut down I unpluged the charger and set it back to 19V. But now when I press the on button nothing works, and I mean nothing, nothing will start up, nothing. The power button blinks once every 6 seconds. Which I believe is a cpu failure. I have done a reset where you drain the power and I have removed the cmos battery on the motherboard, but with no luck... Any advice? Thank you in advance.