Unplug the ac adapter. Keep ac adapter unplugged.
Remove the battery and keep the battery unplugged.
Hold the power button down for 15-20 seconds. (Nothing will appear on the display and none of the lights will light up.)
Release the power button and plug in the ac adapter ONLY. (Please note that a power indicator light should be lit on the ac adapter when it is plugged in).
Normally power on the notebook.

let me know how it goes

ok

let me give you the steps

At the bottom of the laptop there is a battery reset hole

push and hold the tiny button for 10 seconds

now turn on the computer

the whole screen is white

or partially

at the bottom side

do you see two latches

ok

its inbuilt

did you unplug the acadapter

unplug the acadapter

and then reset the battery from the bottom'

hold down the button using a paper clip for 10 seconds

how old is the laptop?

this laptop comes with a built in battery pack

which cannot be removed to reset the computer completely

however

if we open it the warrany will be terminated

and i know if we open it remove the battery and put it back in will make the computer work again

but i dont want you warranty to be terminated

in this case

Hp is the best brand to be trusted

anyways

solution to this

is to call up Acer and tell them the issue as the screen is all white you will get a replacement

yes you can get it replaced from there