Albatron PX865PE Pro Motherboard "top led lit red" Questions

...fine for a few years and this problem occurred. I gave up and upgraded to new technology but want to use it for games. The led is located between the top two pci slots. its just a power

LED's may work, and case fans; but not the computer; NOT enough power to turn the Processor on...... [ Desktop PC: When the Power Supply is plugged into power, there is a constant 5 Volts present.....