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Difficulty booting w case card reader connected |
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Noobster 
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Joined: 27 Jun 2019 Location: US Status: Offline Points: 7 |
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 Topic: Difficulty booting w case card reader connectedPosted: 27 Jun 2019 at 3:15am |
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Dear All,
I just completed a build with b450m pro4. With everything connected it just wouldn't boot. I have isolated this to a case card reader that connects to a USB2 header - as sonn as disconnected it all works flawlessly. The problem persists in either of the two available. Now, the interesting thing is that F11 after a delay of ~20s does take me into boot menu where selecting my primary boot device does load windows and once loaded all seems to work well (even the card reader). Thus it must be an obvious UEFI setting that I am missing but where could it be? |
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xhue
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Joined: 17 Aug 2018 Status: Offline Points: 634 |
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Posted: 27 Jun 2019 at 3:29am |
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Try CSM under Boot?
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Noobster
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Posted: 27 Jun 2019 at 4:00am |
Yes, toggled through all the options - no luck. |
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Noobster
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Posted: 27 Jun 2019 at 4:29am |
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An update - now after sleeping on boot options screen (99 lower right corner) for about a minute (random duration 50-65 seconds) it actually continues to load windows without fault.
That's a positive development as previously it would just stay stuck, yet having to wait for a PC to boot for way over a minute feels like 1990s... |
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xhue
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Posted: 27 Jun 2019 at 5:43am |
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May I kindly recommend you update BIOS and then clear your CMOS? Try and see what happens after that.
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Noobster
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Posted: 28 Jun 2019 at 12:30am |
Thanks, Xhue - if that's the only way. Quick Q - per the instructions in download page: "Please install "AMD all in 1 with VGA driver ver:18.50.16.01_WHQL" - should I be installing that if I have no intent on using integrated graphics? Thanks again, |
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xhue
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Posted: 28 Jun 2019 at 12:50am |
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No need to install that AMD driver for the integrated GPU.
It's better to disable the iGPU from BIOS too, if you are not going to use it. |
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Noobster
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Posted: 28 Jun 2019 at 5:22am |
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Thanks again!
After the UEFI update the situation seriously improved - at the same point it used to be stuck for about a minute now takes about 5 seconds which is acceptable and possibly what it takes to initialize the USB (as with SD reader not connected there is no delay whatsoever). P.S. I don't even see the iGPU option in the BIOS - could it be disabled by default? |
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xhue
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Posted: 28 Jun 2019 at 1:33pm |
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iGPU option is pretty darn hidden. I don't remember the path through the menus, however.
The option defaults to 'Auto', meaning iGPU is disabled if an external GPU is detected during boot. |
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xhue wrote: