Q: Mac Pro Tower 2012 Unresponsive (Power Light On, Red LED in tower on)
Found my Mac Pro 2012 tower unresponsive today with the power light on and a red led light on inside the tower. Researched and couldn't find anyone that had had this exact issue (unless I am missing something) and I am also having trouble understanding what the LED light means and how I should proceed. Any advice would be greatly appreciated
Posted on Sep 9, 2016 1:11 PM
Remove all external devices and shut down, disconnect all external cables
check your GPU for dust/dirt/creep (where it 'creeps' out of the socket), you can remove this but when undertaking this make sure you are properly grounded at all times and the components are put into static free containers, then clean the interior of the computer with compressed air making sure you do not damage connectors by blasting them point blank.
Replace the GPU and follow the directions to reset the SMC.
Reset the System Management Controller (SMC) on your Mac - Apple Support
see the yellow highlight
Plug directly into a grounded wall outlet not a power strip or battery backup.
failing that replace the CMOS battery on the logic board, after that leave the unit unplugged for 30 minutes or more.
Posted on Sep 12, 2016 9:02 AM