Motherboard issues

please help i just built a system for home and every thing went well untill the windows screen came up and then my keyboard stoped working it worked fine in the bios setup but after entering windows it just won't work / under device manager hardware nothing is listed and windows fails to recognize it the keyboard is a microsoft wireless comfort keyboard with the receiver pluged into the ps2 keyport / the mouse wouldn't work either until i pluged it into a usb port
the motherboard is a evga 122-ck-nf68-a1
ps: the odd thing is a wired keyboard will work

Using the keyboard that works, download and install drivers for your specific keyboard and OS.