Hi, I noticed that windows was displaying a message saying usb not recognised and such.. I changed the keyboard and mouse to different ports of the motherboard and everything was ok.. But after a while nothing seemed to work anymore, i changed the usb to different ports and there wasn't even the beep anymore.. I restarted the pc several times and sometimes different ports may work but as soon as i put it in sleep mode i have to change to different ports again.. What is causing this? I'm sure its the windows fault because all 3 of the motherboards i had did that! I have windows 7 x64 home!