RE: [SLUG] No Post screen

From: Ken Elliott (kelliott11@cfl.rr.com)
Date: Tue Jul 21 2009 - 00:01:10 EDT


>> When I don't get the Post the first time I get alternating messages that
flash on the screen. "digital" "analog" until I shut the OS down and restart
the box.

That is your monitor, not your PC that is supplying the messages. Present
day monitors are far too aggressive in going to sleep. It is not unusual to
turn on a monitor and for it to sleep within seconds of not seeing a video
signal. After it sees a signal (POST) it starts to wake up. You could
actually be getting a POST but can't see it because the monitor sleeps so
quick - common to LCDs.

Ken Elliott
=====================

-----Original Message-----
From: slug@nks.net [mailto:slug@nks.net] On Behalf Of Bob Stia
Sent: Monday, July 20, 2009 11:24 PM
To: slug@nks.net
Subject: Re: [SLUG] No Post screen

On Monday 20 July 2009 12:03:21 Eben King wrote:
> On Sun, 19 Jul 2009, Bob Stia wrote:
> > This has been going on for years but now I have to fix it. Every day
when
> > I boot up my machine (I have a toggle on a surge protector which fires
> > everything up. monitor, printer, etc, and supplies power to the computer
> > itself) However, the computer itself needs to be started independently
by
> > pushing a button on the front of the case. Everytime I do this i get a
> > blank black screen. Nothing - nada. I have to push the button and hold
it
> > until the computer shuts down, re-push the button to start the computer
> > again. This time the POST starts and the computer boots normally.
Happens
> > every time.
>
> Is the monitor still in "sleep" mode until the OS starts to load? Or
> has it woken up fully and is actually displaying an all-black signal?
> If it's still sleeping, what I suspect is this:
>
> computer: power | POST | OS | reboot POST | OS | off
> monitor: power | sleep | on ------------------ | off
>
> Or, it's so slow at warming up (is it a CRT?) that the POST passes before
> it finishes. (I used to have a monitor like that.)

Hello Ronan, Paul, Seth, Eben,

Thanks for replying.

If you mean firmware update = bios?, then it is running the latest
available.

>This could potentially be a problem with the power supply.
>
>If you were to wait, say, 5 minutes.. before you try to turn on the
>computer after you turn everything else on, what happens?

Hmmm...don't know but will try it. Never waited that long. The power supply
is
a big one for the time I bought it. An Enermax 460 watt. Should be more than

adequate. Really hope that I don't have to find specs on all the components.

Thinking way back, this box had a CRT monitor and didn't have a problem. The

LCD can't draw more than the LCD, can it?

And Eben, not sure what you mean by "sleep" mode. The monitor was just
powered
up less than a minute before. I don't have any power saving turned on and
even at that it wouldn't come into play until after it is booted, right? and

no, it is an lcd, Samsung Syncmaster 213T. Does a monitor sleep at "power
up/on" until the OS wakes it up?

When I don't get the Post the first time I get alternating messages that
flash
on the screen. "digital" "analog" until I shut the OS down and restart the
box.

Bob S
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