My pc doesnt give any wiew on screen when I press power button

@muhammedeminn sounds like you may have a bad display. Start off by connecting an external monitor to your Acer and see if that shows you anything.

You can also check the backlight on your computer. Turn the computer on and when all the "little leds are on" are on, use a flashlight and shine the beam at an angle against the screen. Do that in a darkened room. See if you can make out shadows or shapes of your desktop or your sign in screen.

If you do, it is your backlight that has failed. That can be an issue with the light itself or even with the motherboard and display connector.