If you bought an aftermarket charger and/or battery they may not work correctly and still cause it to do nothing.
Blinking can be for a number of things. The motherboard being dead, the display, cheap parts (as mentioned above), etc.
You can try seeing what the blinks are. Are they steady and no pattern? Or is there a pattern to them. If there is a pattern, then I would suggest looking it up through the manufacturer to see what it refers to. Many laptops blink in a patter (or beep in a pattern) to show what the problem is.
If you get nowhere with that, then you are going to have to have it looked at. Either by the manufacturer (if still under warranty) or by a local tech.