laptop screen goes black on startup, does nothing, then gives 2 beeps

hello everyone, i really need help here ..

i shutdown my laptop yesterday normally and today when i tried opening it it gives me a blank black screen, and then in a minute or so it makes 2 beep sounds and that's it

i'm not really sure what the problem is, but i've been searching online for some time now and i can't figure it out

things i've tried that didn't work :

1)disconnecting battery and pressing the power button for 60 seconds

2)placing a magnet on the spot where the switching lid should be

please help ..