greybat said:
On one of my machines - an old Gigabyte GA-G41M-Combo motherboard - after upgrading to Windows 10, I could not plug in any USB2 Flash Drives nor Hubs to any USB2 ports. (I have separate PCI card for USB3, and it seems to be working fine). I received Device Descriptior Failed messages for everything, although the Mouse, Keyboard and UPS connections worked - presumably because they are USB 1.1 devices.

After messing around with various possible solutions, including upgrading Intel drivers to the latest versions (9.1.9.1006: 7/31/2013) , I suddenly found that, if I uninstalled the USB2 Host Controller (Intel N10/ICH7 Family USB2 Enhanced Host Controller - 27CC) the flash drives were immediately recognized, and mounted and appeared in File Explorer. I have now disabled this controller, and everything works fine, although I am guessing that I get very slow speeds from the flash drives. Fortunately, I don't use them very often on that machine!
oh thank you, now my usb is running normally again