Well now you said anyone!..........have you tried an extended Bios reset.........pop the battery as well and leave it out for an hour at least, cycle the power button as well this will drain any residual power in capacitors..........once reset button has been pressed several times, re assemble......power up and go into Bios and hit "Optimized Defaults" save and reboot..........reset board (Bios) to your liking , save and reboot back into windows
Have you tried Native and/or legacy support under USB support...........There's also a couple of other setting in bios applicable to mouse and keyboard support.........it can't hurt anything and might fix the problem.
Aussie Allan