Computer Services Caulfield - Client called with an issue that her Mac Pro wasn't turning on, once on-site we re-seated the RAM as corrupted data was preventing the system from turning on. After the re-seat the computer booted up and no files were lost or damaged. Sometime when computers are shut off properly the data stored in RAM becomes corrupted and causes a system halt. Starving the computer of electricity is one way of resolving this issue however some RAM still has left over power in it, that's where a re-seat fixes the issue.