Mac Pro 2010 tower won't power up.
Having issues with my Mac not powering up,2010 Tower. Can't get it to turn on. tried all the possble scenarios , just need help with the solution to this problem.
[Re-Titled by Moderator]
Mac Pro, macOS 10.14
Before you order a replacement power supply, check the long life lithium non-recharging coin cell battery half hidden behind the graphics card. Use a very bright light to remove -- Its holder is delicate, and breaking the holder will ruin your afternoon.
It should measure at least 3 Volts in you hand. if not, it can be replaced with a "pretty good" replacement CR2032, used in car key fobs and garage door opener controls and readily available.
