... No POST screen using DVI connector ?

EDC

EDC

EDC

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Joined
4 Jun 2007
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308
Location
UK
system is in my sig, all working fine for the last 6 months until this just started happening, ...

I turn on the computer and about 60 secs later I'm at the desktop, but there's no POST screen. It doesn't matter if I just turn-on, or select restart from the desktop. Everything works during the boot process, system beeps, fans, HD activity lights, but the screen remains black throught the boot process. I can't see anything in the BIOS, or any boot options like safe mode. When It reaches the desktop stage, suddenly the display appears ???

I checked the following things ...

DVI connecter from the graphics card to monitor = OK
Disabled the fast boot option in BIOS, so it should show everything during the boot-up
Installed latest Nvidia drivers for my card
Installed the Samsung driver for the monitoor
ran Memtest on the Ballistix memory = no errors

My gfx card came with DVI-I to VGA adapter, so I tried using the analogue VGA connection instead, now the POST screen is restored.

I can't figure out why the the display is only being detetected using the DVI-I to VGA adapter?
 
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Sure its not the screen ?

If its working better using the same GFX card but with a DVI-VGA adapter, I would have thought that the computer was fine. I would personally lean to it being the screen taking a while to recognise it has a digital input.

Is your monitor set to automatically find where the signal is coming from ? If so can you set it manually to look just at the DVI connection ?
 
I don't think it's the Samsung monitor, it's been showing the post screen using the DVI input for the past 6 months, everything was normal, then a few weeks ago the POST screen stopped showing, I was very lazy and didn't investigate further because I found that if I pressed the re-set button on the front panel of my computer about halfway through the boot process, my computer would re-start and the POST screen would be showing . But that one re-set then became 2 resets, then 3 re-sets, and now it doesn't show the POST screen no matter how many re-sets. Once the boot process gets to the desktop the display magically appears in DVI mode, everything runs normally, but this means I have no way to ever enter the BIOS.

I've tried manually setting the monitor to DVI (shows no POST details)

I've tried the Auto-Detect setting on the monitor (shows no POST details)

The only way I can use the computer and see the POST screen at the moment is by using the DVI-VGA adaptor
 
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I don't have any settings for display mode in my BIOS, there is one setting for "Graphics Adaptor" which is set to PCI-E and that's about it.
 
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