In the BIOS, Load Optimal Defaults, save = Yes and reboot. You can try to toggle between Legacy USB Support -> Disabled / Enabled -- if you have a PS/2 keyboard (just in case).
After Load Optimal Defaults, you'll need to Uninstall ALL USB devices in Device Manager and those listed in the Universal Serial Bus controller tree, but only if you have a PS/2 keyboard, then reboot with no USB devices connected. Next, make certain the 'proper' aka 'latest' drivers are installed for ALL the USB devices and add (1) device at a time testing in between.
I've seen this problem before and it's a PITA to track-down.