No Auto Sleep mode with desktop 4000
I enjoy my MS wireless optical desktop 4000 and I have one on my Dell Laptop and just installed one on my new HP Vista PC. However on the HP the desktop 4000 will not allow the PC to go into sleep mode automaticly. There is no option in Device Manager to allow putting the PC to sleep. The option to not allow wake up this there but not the option to put the PC to sleep. Anyone have a fix?