Well, I did a lot of work trying to figure out this one for myself but I came up empty and since I'm back on here, might as well let yall take a stab at it. Basically, my desktop has an Epox 9NPA+ Ultra motherboard. Sometime last summer, it became really tough to turn on. Basically, if I shut it down, I have to switch the power supply off for 5 seconds, flip it on, wait 5 seconds, and then see if it'll turn on. If not, I have to repeat the cycle. I tried with a different power supply, and actually the same thing is happening to a friend who has the same motherboard, so it appears to be a motherboard issue. But does anyone have any idea what it could possibly be?