Monitor turns off on its own, then won't turn on

[monitorhelp]

This has happened three days in a row (in the morning):

- I turn on the monitor
- The light goes on
- I turn on the computer
- It sends a "sync" signal right before it loads the bios
- Monitor flashes briefly
- Then it turns off.

It does NOT go into sleep mode, it simply shuts off. And won't power on
until after one minute or so.

I must boot down the computer, unplug the monitor power cable for about
one minute. Then connect power, turn on monitor, then it usually works.
However, this last time I had to do it twice.

Bad circuitry?

 

[Andrew J]

This has happened three days in a row (in the morning):

- I turn on the monitor
- The light goes on
- I turn on the computer
- It sends a "sync" signal right before it loads the bios
- Monitor flashes briefly
- Then it turns off.

It does NOT go into sleep mode, it simply shuts off. And won't power on
until after one minute or so.

I must boot down the computer, unplug the monitor power cable for about
one minute. Then connect power, turn on monitor, then it usually works.
However, this last time I had to do it twice.

Bad circuitry?

Does that happen if you tap F5 at startup and enter safe mode? If not
it's most likely a driver problem. Go to Device Manager, delete the
video card(not disable) and reboot. That should straighten it out.

 

[Anon]

This has happened three days in a row (in the morning):

- I turn on the monitor
- The light goes on
- I turn on the computer
- It sends a "sync" signal right before it loads the bios
- Monitor flashes briefly
- Then it turns off.

It does NOT go into sleep mode, it simply shuts off. And won't power on
until after one minute or so.

I must boot down the computer, unplug the monitor power cable for about
one minute. Then connect power, turn on monitor, then it usually works.
However, this last time I had to do it twice.

Bad circuitry?

If possible, try running that monitor off another computer or even a
notebook. Kind of sounds like the power supply in the monitor might be on
it's way out though. -Dave

 

[monitorhelp]

The bios screen doesn't even post before the monitor shuts off. That's
why I think it's the circuitry. But it does flicker for just a second.

Perhaps the video card is sending something abnormal and the monitor
shuts off by way of a self-protection mechanism?

 

[SteveH]

Does that happen if you tap F5 at startup and enter safe mode? If not
it's most likely a driver problem. Go to Device Manager, delete the
video card(not disable) and reboot. That should straighten it out.

Not likely to be a driver problem as it doesn't get as far as Windows.

As it doesn't seem to be booting properly, I'm not sure it's anything to do
with the monitor. I would guess at the PSU in the PC being flakey, it might
be worth trying another one in it, if you have one avilable.

HTH
SteveH

 

[Aldo Larrabiata]

iiyama monitor with both BNC inputs and a VGA socket ?

If yes, looks to be quite common.
Try the other set of connectors instead.

 

[Aldo Larrabiata]

iiyama monitor with both BNC inputs and a VGA socket ?

If yes, looks to be quite common.
Try the other set of connectors instead.

 

[monitorhelp]

DNG DING DING !! WINNER! WE HAVE A WINNER!!

But I've had it like this for years. Main reason I went to BNC was
because of the newer nVidia detenator drivers / iiyama refresh rate bug
(but I think that's fixed now). And sure enough, I left the old vga
cable connected. I'll try with just one cable. Thanks.

 

[monitorhelp]

Well, I tried that and it's still turning off. Tomorrow I will try a
different computer. Could be the video card.