I received a new T400 2-3 weeks ago. Sometimes when I press the power button to start it up the "Power On" LED will turn on, but the "Drive in Use" LED never turns on or flashes. The screen stays off and I have to press the power button again to turn it off then try turning it on again. Sometimes it takes a few cycles before it will read from the hard drive and start. Has anyone had this problem or know why this might be happening?