HOW CAN I FIX MY HP COMPAQ 6330?

CAN ANY 1 HELP MY LAPTOP WAS WORKING FINE THAN WENT TO TURN IT ON ONE DAY , AND IT WONT TURN ON , THERES POWER GOING THREW MY POWER ON BUTTON KEEPS BLINKING, AND ITS JUST A BLANK SCREEN, I HAVE TOOK THE MEMORY MODULES OUT AND REPLACE THEM BUT STILL NUFINK . ANY IDEALS AND MY WARRATY RUN OUT CHRIS XX