Input not suported Acer Nitro monitor

I just upgraded my monitor to ACER NITRO VG220 and I connected it to my NVIDIA GeForce GTS 450 video card via HDMI cable. When I power on my PC, the monitor keeps saying "input not supported" on a black screen until the boot sequence finishes. It shows the image from the welcome screen of windows 10 and after that it works normally. The problem is that I can't access BIOS settings or anything else at startup. I checked the resolution and the refresh rate and they are ok (what monitor specs are 1920x1080 , 75 Hz). Any idea how to make my monitor start normally?

Post was last edited on January 17, 2019 9:42 AM PST

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I get that on some PCs.

It's a limitation of the BIOS to initialize the video card and output a supported signal.
OR you have the BIOS set to use the onboard video as primary and when Windows boots it changes it to work.

I have to disagree that 1920x1080 at 75Hz is normal. I doubt a BIOS can get that right so there's that issue.

It may be something that you are stuck with unless it's the BIOS setting I noted.

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Reply to R. Proffitt

Post was last edited on January 17, 2019 9:46 AM PST

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Yes it is.

But all the BIOS to date seem to init the display to 60. So you have that plus it may be set to use the onboard video at boot.

Remember I know the issue and it's where we have to keep a display around that works with the bios or change the settings if the bios allows it.

This is pretty much the same old issue of PCs not long ago that you couldn't get to the BIOS with USB keyboards. You would plug in some PS/2 keyboard, get to the BIOS to set it to allow USB but later you'd need the PS/2 keyboard if the CMOS was reset.

Oh, how the problems repeat.

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onboard video

My motherboard does not have an onboard graphic card

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I only know what PC details that are shared.

Still you will see issues with some setups like this. It's not unusual. Most folk just use it and if they need to get to the BIOS they plug in some monitor that works. Similar happened before as with my PS/2 keyboard encounters about 10 years ago.

Ask the PC maker if there is a BIOS update. Might or not, fix it.

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