pc not turning on every morning

So a couple of weeks ago I turned off my pc with th off/on button bc everything froze. After that my pc didn't want to turn on for like 14 hours after which I kept plugging and unplugging and pressing the on of button and in worked. But now the issue came back and this time its more annoying. My...

Hello, As the title says, my pc will not turn on not until I put it under the sunlight for a couple of minutes. I read an old threads here with the same issue that I have. Is there any other solution other than replacing the mobo? I appreciate all the help.