About PS/2 problem, you can follow my steps:
1. Check the Signals of PS / 2 link to I / O
2. Remove Capacitors on the Signal Line, after 330 and 472 RESIS That Replace
3. finally, change the I / O
About the USB does not Recognize in the Windows, you CAN Follow my Way
1. Check the correct voltage of USB Signals Data +, Data- and 5V power supply
2. change the Transistors on the Signal Line
3. finally, change SB.
I hope my Steps above CAN Help you resolve your problems. thanks you guys!