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Just recently I was trying to install Windows 10 on my new SSD drive, while having HDD unconnected. Then I booted autoinstaller from USB and found out that my SSD was missing from the list(possibly because it wasn't initialized first). After that, I shut down the PC and reconnected the HDD drive(to initizalize the SSD from it) without changing anything else. Now, the PC won't turn on at all; it doesn't start the fans and the motherboard. I guess that either the motherboard is dead, or the power supply, but it seems a bit strange because the only thing I've changed since it was working was the hard drive. I've already checked the minor connections and problems, like a disconnected power button and the motherboard's battery.

Could be there some other possible reasons for this unhappy event?

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  • Have you tried jump-starting your power supply with a paperclip to rule that out? Have you tried shorting the power button pins with a small metal object (tip of a screwdriver) to see if you have a faulty power button cable?
    – spikey_richie
    Commented Mar 31, 2021 at 19:38
  • @spikey_richie Yep, I have just done that. I guess that leaves me with the dead motherboard.
    – Ver Nick
    Commented Mar 31, 2021 at 19:45

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So, after some time, I tried to turn it on again without changing it, and it worked! I think that's very likely due to overheating; my PC heats a lot.

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  • Could also be a cable that was barely making contact, and was moved during assembly. As for heat, that's abnormal. Are fans working and case clean?
    – DrMoishe Pippik
    Commented Mar 31, 2021 at 20:46
  • @DrMoishePippik Yes, all the fans are working properly, on motherboard, power supply, video card and the outer fan. As for the case, it is not perfectly clean, but I regularly clean out the most of the dust.
    – Ver Nick
    Commented Apr 1, 2021 at 10:47

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