Strix B760-F WIFI Gaming cut-off USB power during windows boot time?

[NETRICA]

Hello there, Iam new customer with Strix B760-f motherboard, NZXT C850 80 Gold PSU, Intel i5-13600KF CPU, RAM 2x16 Corsair DDR5 5600 at XMP I profile, and NVIDIA RTX 4060 Ti 8GB Asus Dual OC. Also M.2 NVMe Samsung 970 Plus Evo as SSD.

The problem is that when pc power up,  it tooks 5 - 10 seconds of PRE-POST time, after that when windows starts to boot my USB powers cut-off for 5 seconds and after that they power ON again (my keyboard and mice lights indicates that) and windows lockscreen appears.

That makes PC boot slower than usual.

Why is that and is it a problem? Because there are 2 more PC's here and no one boot this way. Other PC-s just turn on in second and in another 3 seconds shows desktop. 

Thanks for answers and sorry for my english 🙂 

PS: I think that is because of PSU fault and replaced it with NZXT C850 80 Gold, before I was using Cougar XTC 750 80 plus.

But nothing changed. 

What's going on ... 

[JohnAb]

My PC does a very similar thing - during POST the keyboard and mouse turn on and off several times. I haven't made a note of the exact behaviour, but I have always assumed it's normal. If I want to enter the BIOS, I have to press the DEL key when the keyboard is active. Never really caused a problem, but now you have mentioned it, it is annoying. When I think back, I don't remember previous builds doing this. 

[NETRICA]

Ofc it is annoying ... I uploaded video in first post. Stupid thing is that there is not a debug option. We have only boot log, without timestamp (yeeeey). There is no realtime verbose output for that circle ...

And here is video from another PC.So THAT is normal behaviour I think.

Ofc I dont blame ROG for that.

(btw this pc is my old config. When it was with samsung SSD and RTX VIDEO,  was the same way slow booting.

BUT In new conf I switch videocards, switch m.2 SSD's and nothing changed.

So ... I disabled all startup programs, now I will try a clean new installation .. IDK maybe some software make a mess ... 

[JohnAb]

Your PC is much faster to boot than mine, but the 690 Hero is known to be slow. My keyboard turns off at least twice and I saw that yours only seems to do it once. Let me know if a reinstall fixes it, but I don't think it will. I'm going to try booting to a live Linux USB in a moment and see what happens as I can't remember. Will report back.  

[NETRICA]

Actually. I ran fresh install of Win 11 Pro with no success. BUT! I removed AI Suite 3 because of windows memory integrity setting incompatible and ... Strix B760 start boot for an eye blink... o.O That is not first case, when this problem dissappears from nowhere. (I read a lot in internet forums). Hm ...

What I was tried with no success:

Disable all startup applications

Reinstall fresh copy of win 11

A new PSU, new graphic card, new SSD (M.2)

Now I will install Steam, Epic game launcher and some programs and will update that post (I hope for final)

[JohnAb]

Looks like I replied when you did - interesting to know your experience. I think it's all part of the OS initialising the USB hardware. So I guess there is no way around it. 

[JohnAb]

Update - I just booted into a live version of Knoppix and exactly the same thing happens, so I don't think that a Windows reinstall is going to help. I think we just have to live with it. My keyboard goes off for about 10 seconds during the Windows boot, it's the same as Knoppix, although it only goes off for a couple of seconds during that process. I hope this information saves you the trouble of a reinstall. 

[NETRICA]

Well, after a clean install and all programs been installed, after removing AI Suite 3 (who is overclock tool I think), everything seems to be OK. Times to times Windows boot slow (with USB power blinks), but it is when I install something new programs on machine. Nobody knows what's goin on .. and perhaps we soul'd never know.

BTW FYI early I tested it with another M.2 with no success. But when reinstalled everything and after every one program I used to reboot system. Now PC have different behaviour. Don't know how is with unix systems. But I think that is some mess with Windows conf and relation "system <-> UEFI" ... 

[JohnAb]

I think you're right, maybe we'll never know, but as long as it's all working then put it behind you and enjoy the build. I've been guilty of worrying about things like that, spending hours seeking perfection, but sometimes it's just not worth the effort. My board has always done the blinking USB thing regardless of the OS, so I'll just live with it. I hadn't even really thought about it until you mentioned it, I'd be happier without that behaviour, but oh well 🤣

[NETRICA]

Indeed. It is just pain in the a$$. And Iam perfectionist, that's why it just annoys me.