Any click sound and red LED flashes when you turn on the main power? Not the power button but the plug to your power outlet.

Any click sound and red LED flashes when you turn on the main power? Not the power button but the plug to your power outlet.

most likely the mobo, the rest normally wont be easily faulty. the thing u can try is to remove everything leaving only MOBO. clean it with electronic chemical for any dirt or slight correction at the contact pin. In my case I use a degreaser a bit harsher but it is up to you. later I rinse the mobo with a spray water to remove the chemical, then leave it dry or use a hair dryer.

then try assemble everything see if it is can be turned on or not. if is still fail, last resort I normally put the mobo in the baking oven 175-200C at most 7 minutes.