A peculiar POST conundrum.

Have you tried turning it off and on again?
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eVoL
 
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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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Rusty
 
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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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Tichinde
 
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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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Me
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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.
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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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