I have a new Gateway DX4300-15e desktop computer running Windows 7 64-bit.
The computer is very difficult to turn on. The power never comes on immediately when the power button is pressed. There is often a delay of 5-20 seconds after pressing the button before the power comes on. Sometimes it must be pressed several times. Just now, I had to press it repeatedly for close to 10 minutes before it finally came on.
There seems to be no problem with the system power once it is actually on. I have no unexpected reboots, no dimming or audio problems and no performance problems. The only issue seems to be turning the thing on.