TriggerFinger

is this laptop yours? no offense, i am just asking because as per your reply you said you do not know where the RAM/memory is located and if this is not your personal property, any wrong move on your part can cause some more damage.

HDD LED blinking? that means there is a symbol of a harddrive in your laptop that lights up or blinks each time you use it. if you do not see this, and there is nothing on screen, i do not think there is still much more that you can do.

bring it to a repair shop for professional help