AMD Motherboards - USB keyboard fast key repeat and crash at boot

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USB keyboard fast key repeat and crash at boot

Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=13203
Printed Date: 07 Aug 2025 at 7:19am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: USB keyboard fast key repeat and crash at boot

Posted By: spiff
Subject: USB keyboard fast key repeat and crash at boot
Date Posted: 19 Dec 2019 at 12:24am

Hi,
I've just bought an B450M Pro4-F with BIOS 1.60 using a Ryzen 5 3600.
I tried to PXE boot to configure the PC but pressing a key on the keyboard gives really fast key repeat and locks up after a few seconds.
I can also get the motherboard to lock up if I press any key for even a short time during boot. eg Esc/Del/F11

I managed to work around it using a PS2 keyboard.
Also once in Linux the USB keyboard worked fine.

Is there any settings I might have missed that might fix it?

Regards
Spiff

Replies:

Posted By: spiff
Date Posted: 20 Dec 2019 at 1:25am

Asrock support suggested I try the Beta 1.97 BIOS which seems to have fixed it.