Is not the power up and boot areas but later when the USB device stop working.
So I'd check that the BIOS is current and the builder installed the drivers the motherboard maker has at their web site. I'm finding new PC builders trying to just install Windows 10 and failing to get it working.
I'm having a problem with USB devices being disconnected/turned off when my computer initially starts up. I have a USB headset, USB keyboard, and USB mouse, and when I turn on my computer and log into Windows, all of them will entirely stop working several times during the first couple of minutes after startup. All of the devices completely lose power and will not work for a few seconds, and then they'll start working again, and this will happen maybe five times or so. This happens whether I'm using the case's front ports or the motherboard's built-in ports, and whether I'm using USB 3.0 or 2.0.
Windows is up-to-date, I have my motherboard's BIOS updated, and I have Adaware Antivirus, which scans my system once a week and has real-time protection on. I've not been able to isolate what causes it other than that it happens only when my computer first starts up; after a few minutes of this, everything works properly and the devices never shut off again.
Any ideas what could cause this? Below are my system's specs. Any help would be greatly appreciated.
Windows 10 Home 64-bit
Intel Core i5 6600K
16 GB DDR4 RAM
MSI Radeon RX 480 8GB
Kingston 120 GB SSD (Windows installed here)
Seagate 1 TB HDD
Hitachi 500 GB HDD