Hello i have an acer aspire 5315 that does not display on either external or main display

vaggelishat

I recently bought a pile off old laptops and one off them was this acer aspire 5315. When i put the device on charge the battery indicator shoes an orange light and whrn i press the power button the indicator with the lamp shows green no other lights are turning on and the screen does not displays anything seems turned off as well as when i connect the laptop with a vga on an external monitor.I have some knowledge of computers and i wish i could fix it i have triid switching ram modules and eg. I suspect that might be the gpu or the cpu. Can anyone help me with this problem i know that i asking for a  laptop which is 15  years old but i wish i could fix it. 

JackE

>>>When i put the device on charge the battery indicator shoes an orange light and whrn i press the power button>>>

Wait till the battery charge LED turns from steady orange to steady blue before trying to turn it on. If the battery is salvageable, it should turn blue within about 24hrs.