Problems with the Power on button on my Mac Pro
b I have the new Mac Pro 6 Core Intel Xeon E5 for about 16 months and it suddenly started giving problems with the Power on button at the back. When i press it the light at the back comes on , stays on for about 8 seconds , and then turns off. The Mac never starts up. Sometimes I have to try starting it up for about 2 hrs. before it might sometimes start up. Sometimes for two days it does not start up and then suddenly it does. It's like playing the Lotto. It just starts when it feels like doing so. It's not a software problem. I tried pulling out the plug for 15 seconds, plugging it back in again and waiting 5 seconds before restarting but that does not work. Any suggestions ? Thank you
Mac Pro, El Capitan Beta 10.1.1.