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Difficulty booting w case card reader connected

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Noobster View Drop Down
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    Posted: 27 Jun 2019 at 3:15am
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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Post Options Post Options   Thanks (0) Thanks(0)   Quote xhue Quote  Post ReplyReply Direct Link To This Post Posted: 27 Jun 2019 at 3:29am
Try CSM under Boot?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Noobster Quote  Post ReplyReply Direct Link To This Post Posted: 27 Jun 2019 at 4:00am
Originally posted by xhue xhue wrote:

Try CSM under Boot?

Yes, toggled through all the options - no luck.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Noobster Quote  Post ReplyReply Direct Link To This Post Posted: 27 Jun 2019 at 4:29am
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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Post Options Post Options   Thanks (0) Thanks(0)   Quote xhue Quote  Post ReplyReply Direct Link To This Post Posted: 27 Jun 2019 at 5:43am
May I kindly recommend you update BIOS and then clear your CMOS? Try and see what happens after that.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Noobster Quote  Post ReplyReply Direct Link To This Post Posted: 28 Jun 2019 at 12:30am
Originally posted by xhue xhue wrote:

May I kindly recommend you update BIOS and then clear your CMOS? Try and see what happens after that.

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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Post Options Post Options   Thanks (0) Thanks(0)   Quote xhue Quote  Post ReplyReply Direct Link To This Post Posted: 28 Jun 2019 at 12:50am
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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Post Options Post Options   Thanks (0) Thanks(0)   Quote Noobster Quote  Post ReplyReply Direct Link To This Post Posted: 28 Jun 2019 at 5:22am
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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Post Options Post Options   Thanks (0) Thanks(0)   Quote xhue Quote  Post ReplyReply Direct Link To This Post Posted: 28 Jun 2019 at 1:33pm
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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