NO POWER FOLLOWING POWER UP SEQUENCE/YES WE HAVE FLASHING GREEN LIGHT ON POWER SUPPLY

Then you have a bad power supply. Power supply has a weak voltage power rail. The green flashing light is a diagnostic light that tells you this. 1) ALL the lights, (Such as that green LED light), use less than 1 Watt of power. 2) EACH fan uses 2 to 3 Watts of power. 3) A typical Processor uses 51 to 125 Watts of power. You have a bad power supply, with a weak voltage power rail, and it doesn't have enough power to turn the Processor on. (If no fans are spinning, or spin a few times, and stop. You don't even have enough power to spin Those babies, from your brief diagnoses stated here) What causes power supply failure? Major factors I have seen over, and over, in 20+ years. A) Inside of computer is dirty as well as the inside of the Power Supply. B) Computer manufacturers have the tendency to use cheap quality power supply's. Saves them money. (Example: take $1 times 50,000 computers. $50,000.00 They save a LOT more than that) Back to A) Heat = Wasted Energy. The power supply tries to keep up with the call for power, and eventually components inside the power supply fail. (A can of compressed air for computers used on a regular basis as needed, could prevent this. Cost of can of air ranges from $5 to $8, usually. Computer unplugged from power, computer case open. TOUCH the metal frame of the computer case, to relieve your body of Static electricity. Attach the plastic straw to the can of air's nozzle. Clean the inside of the computer, as well as the inside of the power supply) Solution is to replace the power supply, and you can do this task yourself. I have taught a 9 year old how to do it. I can guide you. The HP Pavilion a305w uses a 300 Watt power supply, that is ATX in design. 90 percent of personal computers use the ATX design of power supply, and they are readily available everywhere. Replacing the Processor, will do nothing but relieve your budget of money, and cause you heartache. Then you have a bad power supply. Power supply has a weak voltage power rail. The green flashing light is a diagnostic light that tells you this. 1) ALL the lights, (Such as that green LED light), use less than 1 Watt of power. 2) EACH fan uses 2 to 3 Watts of power. 3) A typical Processor uses 51 to 125 Watts of power. You have a bad power supply, with a weak voltage power rail, and it doesn't have enough power to turn the Processor on. (If no fans are spinning, or spin a few times, and stop. You don't even have enough power to spin Those babies, from your brief diagnoses stated here) What causes power supply failure? Major factors I have seen over, and over, in 20+ years. A) Inside of computer is dirty as well as the inside of the Power Supply. B) Computer manufacturers have the tendency to use cheap quality power supply's. Saves them money. (Example: take $1 times 50,000 computers. $50,000.00 They save a LOT more than that) Back to A) Heat = Wasted Energy. The power supply tries to keep up with the call for power, and eventually components inside the power supply fail. (A can of compressed air for computers used on a regular basis as needed, could prevent this. Cost of can of air ranges from $5 to $8, usually. Computer unplugged from power, computer case open. TOUCH the metal frame of the computer case, to relieve your body of Static electricity. Attach the plastic straw to the can of air's nozzle. Clean the inside of the computer, as well as the inside of the power supply) Solution is to replace the power supply, and you can do this task yourself. I have taught a 9 year old how to do it. I can guide you. The HP Pavilion a305w uses a 300 Watt power supply, that is ATX in design. 90 percent of personal computers use the ATX design of power supply, and they are readily available everywhere. Replacing the Processor, will do nothing but relieve your budget of money, and cause you heartache.