Z390 Taichi now usb on boot

Nov 21, 2018
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Hey.

I have the normal z390 Taichi board and after initial uefi settings of setting a boot order and I go off to install windows my usb devices are not active until very late in the boot up in windows which doesn't allow me to get into uefi or use the keyboard to do advanced windows boot up options.

I have moved my keyboard to top let usb as you look at the back panel but it hasn't fixed it.

When I reset the cmos then the keyboard and other usb devices are active on startup.

Using the out of the box bios
 
I installed win 10 pro on that very mobo with a microsoft usb

i have to ask what benefit is it to set those windows boot settings during windows installation as opposed to after installation? I'm not being smart, but trying to understand the benefit or what the benefit is

on that board, i'd be careful updating to the latest BIOS release P1.51 - right after it flashed (instant flash with a healthy USB stick, wiped 3X, then formatted to FAT32) the system restarted and on the splash POST screen it gave me those circling white dots for maybe 5 seconds then rebooted itself, 2nd time it only gave those circling dots for maybe 1/2 second then rebooted itself then on the 3rd it didn't make it to the circling dots at all, rebooted and this time all i got was black screen. and gave me Dr Debug code of 65 which Taichi interprets as "chipset initialization error". I RMA'd that board, brought in Gigabyte AORUS Master and with the same cpu, it just went to the black screen.

It's a toss up if the bios flash corrupted the instruction sets in the cpu or did some physical damage or if the cpu was ready to fail when something from the bios release maybe stressed it - talked to intel tech support and they wouldn't deny that a bad or corrupted BIOS could damage the cpu (i9-9900k).

fwiw
there are a couple of other Taichi owners that have had bad experience with the P1.51, one over on the Asrock motherboard forum - the other two that i found were able to get into bios and reflash back to P1.30 BIOS
 
Thanks for the bios advice.

I think I mis communicated my issue.

After initial setup and first time you turn the pc on or reset the bios the usb devices work. Once i set the boot priority from the bios my usb devices no longer until I get into windows. I can not hit f11 or del to get back into bios.

I have ordered a usb to ps2 adapter to try to overcome the issue.

It seems that the usb issue is based on usb 3 ports rather than usb 2. So my question is what usb port are the users of the same board using for their keyboards and have you experienced this issue
 
when i flashed to the latest BIOS release, the one i warned against, i had no signal from the USB keyboard, connected to the USB 2.0 port on the rear of the panel - as i understand it, those ports go straight to the CPU - check me on that, but it's my understanding

I then went & found a new PS/2 keyboard i had in the basement, and again could not get a signal to the cpu or the motherboard. But as i stated earlier, i finally determined, after moving that CPU to a 2nd Z390 motherboard (gigabyte) that the CPU was showing the same error code and was the main problem, so my experience may not relate to yours