Hello - long time reader, first time poster,
I own a HP Pavilion a562n, and recently my power supply light has been blinking and clicking without any boot up.
I unplugged all the power cables in the computer, and checked the power supply. Without the cables the power supply light is solid green.
After plugging in all my other cables, I found that when the main power cable going to the motherboard is plugged in, the light blinks, and when it isn't, the light stays solid.
What does this confirm?
If you need any other information, just ask and I will keep you posted!