A peculiar POST conundrum.

Have you tried turning it off and on again?
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A peculiar POST conundrum.

Postby eVoL » Tue Aug 23, 2016 8:58 pm

When I turn on my PC it powers up, fans spin, but no post beeps happen and nothing appears on the screen. I then press the physical reset button and it reboots and comes to life 100% perfectly. Every time from a cold power on though it does this. Any ideas? :/
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Re: A peculiar POST conundrum.

Postby Rusty » Tue Aug 23, 2016 10:00 pm

Not a clue. I would guess it something power related. Perhaps the motherboard can't get the juice it needs from a cold start and a 'warm' reset works?

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Re: A peculiar POST conundrum.

Postby Tichinde » Tue Aug 23, 2016 10:13 pm

I have a similar thing with my HTC that I have yet to solve.

Turn it on, fans spin up, no beeps, fans spin down........fans spin up like it's been booted again, spin down.
A hard power off via holding the button before powering it back on again fixes it.
It's an odd one, but at a guess it's the PSU or the mobo. I've yet to get round to testing.
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Re: A peculiar POST conundrum.

Postby Me » Tue Aug 23, 2016 10:37 pm

Every time I've seen that at work its been blown caps on the motherboard.
Look for that sort of thing, the bulging especially if its booting OK on the next go. You only need a slight amount of bulging or any of the rust colour to indicate a blowning cap.

Otherwise PSU.

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Re: A peculiar POST conundrum.

Postby Wrathbone » Wed Sep 14, 2016 3:35 pm

I had something very similar to this with my new motherboard a year or two ago, and it turned out to be a setting on the motherboard which lets you do a low-power test boot (for overclocking, I assume). There was a button with a lightning bolt on it on the board, and when I pressed that it went to normal mode and it's been fine ever since.
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Re: A peculiar POST conundrum.

Postby Jez » Thu Sep 15, 2016 6:36 pm

How on earth did you think to find that? How did it even get turned on in the first place :)

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