Chosen Solution
I’ve had the PSU rebuilt. Replaced the battery. Changed the hard drive. Replaced the optical drives. Changed the video card. replaced the memory. Tried holding down the PMU and the on button for 15 seconds, no good. Pulled all the cables and held the on button for at least 15 or more seconds, still no good. What’s left besides R&Ring the motherboard and or the daughter board?
Have you pressed the CUDA button on the logic board?
@alm1ghty55 The CUDA button is labeled S4 in the image I provided below. Look near the bottom left corner of the image. Hopefully this helps.
