My Compaq Presario laptop is 4-5 year old ( i know it may be too old). But last week when i turned it on, the screen just went black. I tried to to shut it down by pressing the power key and restart it again, but it stayed black. I dont know what to do cuz the screen showed nothing for me to fix. i really wanna fix it myself ( so to save some money) please if anyone be so kind to help me out pleaseeee!!!!!