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B650M-HDV/M.2 |
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Fen 
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Joined: 19 Aug 2023 Status: Offline Points: 65 |
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 Topic: B650M-HDV/M.2Posted: 19 Aug 2023 at 2:54am |
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Strange behaviour with mobo (new).
1. In the BIOS the screen is gray background and white text 2. If I Save Changes and Exit it will return to the BIOS 3. I have two SSDs (bootable on old hardware). In the boot tab, if I enable CSM so that I can explicit boot from SSD the system will hang at a grey screen 4. The DRAM and CPU post status lights will light up for a short while but then turn off. Everything is detected correctly (Ryzen 5 / 7600) + 32GB ram [BIOS 1.17] |
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Fen
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Posted: 19 Aug 2023 at 2:59am |
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Drive is GPT formatted
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M440
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Joined: 12 Jul 2023 Status: Offline Points: 3145 |
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Posted: 19 Aug 2023 at 3:31am |
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Just upgrade the BIOS to the newest one.
Mine didn't even boot with 1.17 and did only after I updated the BIOS using the flashback function. For me the windows EFI installation was autodetected by ASrock bios, but I had to manually add linux grub bootloader using efibootmgr. |
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asrock b650m/hdv.m2, ryzen 7700x@85watt
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Fen
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Posted: 19 Aug 2023 at 3:54am |
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With 1.28 I'm still getting the same behaviour :(
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M440
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Posted: 19 Aug 2023 at 4:49am |
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the bios is black background and white letters - like in the picture in the right.
You have a problem with booting a OS from nvme drive? are the drives visible from the bios? what OS you are trying to boot precisely? CSM is a legacy mode. You can disable CSM (even should) if you have UEFI os installed on GPT partition. 
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asrock b650m/hdv.m2, ryzen 7700x@85watt
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M440
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Posted: 19 Aug 2023 at 5:12am |
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anyway i think you might need to add EFI entries to NVRAM. Normally OS while being installed (actually a bootloader) is making such entries in NVRAM and UEFI bios knows what EFI files to boot.
You can try to just run the windows installation pendrive and make a startup repair. Otherwise manually add such entry to NVRAM using bcdedit in command prompt like a guy in this video: https://www.youtube.com/watch?v=4awsXR8STUo or if you use linux edit it with efibootmgr. 
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asrock b650m/hdv.m2, ryzen 7700x@85watt
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Fen
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Posted: 19 Aug 2023 at 6:03am |
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I'm thinking that as well... I'm making a boot USB right now. Upgrading systems small differences is such a pain!
The SATA SDD was being detected in the BIOS but not as a bootable drive (previously being used in Win10) > the bios is black background and white letters - like in the picture in the right.  |
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M440
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Posted: 19 Aug 2023 at 4:33pm |
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i attach the picture of the motherboard bios.
you can see the bios reads the EFI bootloader files how as they are set using efibootmgr above. 
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asrock b650m/hdv.m2, ryzen 7700x@85watt
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