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Z690 Formula USB ports issue

Napoleon3
Level 7

Hey everyone,

I’ve got a weird issue with my ASUS Z690 Formula motherboard.

Basically, none of my USB flash drives or external hard drives work properly anymore — but all my other USB stuff like mouse, keyboard, fans, etc. works just fine.

Here’s what’s happening:

Flash Drives:

  • I have Windows installation on a USB flash drive.

  • When I boot from it, it loads the installer for like a minute, then black screen and the PC reboots.

  • It keeps doing that until I pull the flash drive out, then it boots normally from my SSD.

  • In Windows, the flash drive shows up in Device Manager, but it says “driver is unavailable”.

  • It also shows up in Disk Management, but I can’t do anything with it — no format, no drive letter.

External Hard Drives:

  • They don’t show up in BIOS at all.

  • In Windows, they show up in Disk Management, but not in Device Manager, and I still can’t use them.

What still works:

  • Mouse, keyboard, AIO cooler, fans — no problem.

  • It’s only flash drives and external drives that have issues.

Bios Version 4101 (updated 1 week ago)
All Windows updates are installed
All other drivers are updated to the latest version, also.
Tested all ports..2.0 - 3.1 .. nearly every port..
As I said.. only storage devices don't show up.. I can even charge my phone
I saw 2-3 people with the same problem but didn't find a solution.
I will share pictures. 

1. In device manager it shows up as "unknown device"
Napoleon3_0-1748396525737.png
2. It shows up as a removable device in Computer  management"
Napoleon3_1-1748396580654.png
3. I can't add path or letter. It always gives this problem (but I can easily change letter for other SSD"s)
Napoleon3_2-1748396595932.jpeg
4. In Bluetooth & devices it shows up but it says "driver in unavailable"
Napoleon3_3-1748396644903.png

 




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