Laptop on screen on but doesnt boot (acer)

So i have acer e 15 start and randomly a couple weeks ago started turning on and the screen would also turn on (i normally have a couple lines down the screen) and they show up but nothing seems to boot up and like a week ago it booted fine running fine and again it started doing it again i tried so far taking the memory out and putting it back in disconnecting eveything and trying but still doesnt boot and was wondering if there is a fix and the things wrong with the laptop is:
There is a couple small lines down the screen and doesnt effect anything and the battery stuffed out a while back but hasnt affected it just used it charging and it has blue screened about 2 times but i just reinstalled windows and it worked fine but if anyone knows a fix or anything to help please help would be appreciated :)

specs:


Intel celeron N2840 2.58 GHz

2GB ddr3 l memory

320GB HDD