Acer with Power on indicator blinking.Why?

I have a small portable acer laptop which doesn’t power on. When i plug it to the source, the power on indicator begins to blink; i have unstalled and ininstalled the battery but no changes. Right now i want to loose it and check the power on botton perhaps it is hardware but i don’t want to do that until i’m certain it’s necessary.
Please what could the possible problem be and what is the most likely solution?