https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Thu, 04 Jun 2026 10:43:08 +0000 Sun, 07 Dec 2025 22:02:30 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=113403 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=113403&PID=200565&title=z790-pg-lightning-strange-bios-issue#200565 Author: OppaYA
Subject: 113403
Posted: 07 Dec 2025 at 10:02pm

Hello!
The mouse stops working in the BIOS after I click "Save Changes and Exit"

When I enter the BIOS, my keyboard and mouse work fine. However, after I click "Save Changes and Exit" (without changing any settings), the system reboots. If I then press F2 or Delete to enter the BIOS again, it opens, but the mouse no longer works - only the keyboard does.

If I fully turn off the PC by pressing the POWER button on the case, then turn it back on and enter the BIOS, the mouse works again.

Sometimes, but only sometimes it happens that mouse still works after I click "Save Changes and Exit" and reboot to BIOS. But usually it's not.



Troubleshooting I have tried:

I tested every single USB port on my PC (back of the motherboard and top of the case). The mouse stops working in all of them after the "Save Changes and Exit" reboot.
I specifically tested the USB 2.0 port on the back of the motherboard, and it has the same behavior.
Legacy USB is enabled by default.
I have updated the BIOS to the latest version.
I have cleared the CMOS (complete BIOS reset).
What could be causing this bug, and how can I fix it? Does anybody else have the same issue on an ASRock motherboard?


Here is a video showing exactly what is happening in the BIOS:
YouTube: https://youtu.be/nBxc_l50YbM


System Specs:

Motherboard: ASRock Z790 PG Lightning
CPU: i5-14600K
RAM: Kingston DDR5 32GB (2x16GB) 6000Mhz FURY Beast Black
SSD: Samsung 990 EVO Plus V-NAND TLC 1TB M.2
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