About 6 months ago I built myself a desktop. A few weeks ago the computer started to act strange, for example it wouldn't always give a video signal when it came out of sleep.
Now the issue has become persistent. I can start the PC and it works fine, but if i shut it down and start it up again it wouldn't give video output. The power LED and fans are running, but it never boots. No video signal, no post screen: nothing. When i leave the power off for like one night it would start the following day without any problems. It seems like it needs to discharge before it runs normal?
Anyway, it seems like capacitors are broken (like mentioned here: Computer won't start unless power is removed for ~5 minutes). But I can't really figure out if its the motherboard or PSU? I do not see or hear any abnormalities on my motherboard/PSU. What should be the defective component?