Just try and Laucch a few apps to seeif they sart within 2-3 dock bounces. If you dont have one, simply build one from a USB memory stick, you'll need at leat 12GB stick to do this or another filesystem on your mac (that doesnt have Time MAchine). restart your Mac Pro from another filesystem where you have a MAC OSX 10.8.2 system.the mac will make a squeal and then power up.PRESS and HOLD the POWER BUTTON IN for at east 15-20 seconds and wait for the POWER ON LED to start Blinking then release the power on Button.reinstate the POWER CABLE (turn the poer back on to your mac).with the power disconnected, PRESS and HOLD in the POWER ON BUTTON for 5 seconds and see if anythign blinks (yeah this is probbaly not necessary but an APPLE Eng told me to do it).remove the POWER CABLE form the power point or just pull out the cable from the back of the MAC.A) reset the SYSTEM MANAGMENT CONTROLLER (SMC)?.
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