PC refuses to show me BIOS screen / refuses to boot at all sometimes.

npapani163302f7

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Joined
Sep 12, 2020
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5
Current Build:

CPU: Ryzen 5 3600 @ Stock
CPU Cooler: NZXT 140mm AIO Liquid Cooler
Motherboard: MSI B450i Gaming
GPU: NVIDIA GTX 1060 6GB
RAM: Corsair Vengeance 16GB (8x2) @ 3000MHz
PSU: NZXT 650W SFX-L 80Plus Gold

Here's the scenario, when booting my PC it skips the BIOS screen completely and boots into Windows straight away. During boot if I try to press F11 or Delete it should display the BIOS or the boot menu, instead of doing so it just stays on a black screen and the PC never boots, bare in mind at this time my keyboard is lit up so there is power being provided to my USB ports. I have also tried to boot the BIOS via recovery settings in Windows 10, doing this also leads me to a black screen where it just never boots.
I have the exact same issue with you, but I have figured it out. My PC is connected to a Dell SE2717H, 1080p monitor via HDMI (it also has VGA by the way). I was scratching my head with this behaviour until I disconnected the PC from the Dell and connected it to my 4K Sony TV. And guess, the MAG logo appeared while booting and I could get into the BIOS through <DEL> or through the advanced options of Windows 10. Now to the resolution: find another monitor or TV and if it displays the BIOS go to Settings->Advanced->Windows OS Configuration and change it from UEFI to CSM. After that you will be able to get into the BIOS as you should with your existing monitor.

FYI, when my PC was connected to the Sony 4K TV with UEFI enabled, Sony reported the BIOS resolution as 3840 x 2160 (pic2) , whereas when I changed it to CSM it reported as 1080p (pic1)!!! So I think that for some strange reason the Asus VGA is incorrectly sending a very high resolution which my Dell 1080p monitor cannot display or understand. See the third pic: it must be something with the "Video OpROM policy"


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Last edited:

m3rtng15c002ea

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Joined
Sep 5, 2020
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I have the exact same issue with you, but I have figured it out. My PC is connected to a Dell SE2717H, 1080p monitor via HDMI (it also has VGA by the way). I was scratching my head with this behaviour until I disconnected the PC from the Dell and connected it to my 4K Sony TV. And guess, the MAG logo appeared while booting and I could get into the BIOS through <DEL> or through the advanced options of Windows 10. Now to the resolution: find another monitor or TV and if it displays the BIOS go to Settings->Advanced->Windows OS Configuration and change it from UEFI to CSM. After that you will be able to get into the BIOS as you should with your existing monitor.

FYI, when my PC was connected to the Sony 4K TV with UEFI enabled, Sony reported the BIOS resolution as 3840 x 2160 (pic2) , whereas when I changed it to CSM it reported as 1080p(pic1)!!! So I think that for some strange reason the combination of MSI's BIOS and my Asus VGA is incorrectly sending a very high resolution which my Dell 1080p monitor cannot display or understand. See the third pic: it must be something with the "Video OpROM policy"


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I think you're right about this because I changed my BIOS settings from CSM -> UEFI (I was planning to turn my PC into a Hackintosh), but after changing that, my BIOS just refuses to show or boot.
 

npapani163302f7

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I think you're right about this because I changed my BIOS settings from CSM -> UEFI (I was planning to turn my PC into a Hackintosh), but after changing that, my BIOS just refuses to show or boot.
Have you checked for an updated BIOS for your graphics card?
 

laurence1211

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Yes I have.
While it is a problem with drivers, there will not be a fix for it. But sometimes you can find a work around. When you could get into the bios after a cmos clear, did you try setting any of the bios screen/graphics card selection options? Note if you are on the black and white lite bios not all of the options are available, some have been removed.
 

m3rtng15c002ea

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Sep 5, 2020
Messages
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While it is a problem with drivers, there will not be a fix for it. But sometimes you can find a work around. When you could get into the bios after a cmos clear, did you try setting any of the bios screen/graphics card selection options? Note if you are on the black and white lite bios not all of the options are available, some have been removed.
I think I've figured the issue out, the Ryzen 5 3600 (and other Zen 2 CPUs) don't work with CMOS enabled unless you are using specific boards (supposedly the MSI B450 Tomahawk MAX is one that it works with).
 

laurence1211

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I think I've figured the issue out, the Ryzen 5 3600 (and other Zen 2 CPUs) don't work with CMOS enabled unless you are using specific boards (supposedly the MSI B450 Tomahawk MAX is one that it works with).
CMOS is the time keeping circuitry, not quite sure what you are trying to say. Are you saying the 3600 doesn't work correctly with certain bios?
 

flyingv2815b702e7

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Aug 14, 2020
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I have the exact same issue with you, but I have figured it out. My PC is connected to a Dell SE2717H, 1080p monitor via HDMI (it also has VGA by the way). I was scratching my head with this behaviour until I disconnected the PC from the Dell and connected it to my 4K Sony TV. And guess, the MAG logo appeared while booting and I could get into the BIOS through <DEL> or through the advanced options of Windows 10. Now to the resolution: find another monitor or TV and if it displays the BIOS go to Settings->Advanced->Windows OS Configuration and change it from UEFI to CSM. After that you will be able to get into the BIOS as you should with your existing monitor.

FYI, when my PC was connected to the Sony 4K TV with UEFI enabled, Sony reported the BIOS resolution as 3840 x 2160 (pic2) , whereas when I changed it to CSM it reported as 1080p (pic1)!!! So I think that for some strange reason the Asus VGA is incorrectly sending a very high resolution which my Dell 1080p monitor cannot display or understand. See the third pic: it must be something with the "Video OpROM policy"


View attachment 141019


View attachment 141020

View attachment 141021
Great catch!
On both my boards CSM is the optimized default and I just left it that way.
(I selected the UEFI version of the USB boot media when I did the install, of course.)

It is natural to think that CSM should be turned off in a windows 10 nvme world,
but I guess that's not really the case for some reason I cannot fathom.
Some hardware still needs it?
 
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