- Feb 16, 2012
I just recently acquired a Mid-2010 Mac Pro 5,1, and it is now having a major issue. When I initially got it (a few hours ago), it worked perfectly fine. However, after letting it sit awhile unattended (while I was in another room flashing an AMD Radeon HD 5870 graphics card I got for it), I come back to find it in the state you see it in these pictures... The Power LED is on, and both CPUA and CPUB Overtemp LEDs are lit red. There is no other activity whatsoever, no fans spinning, hard drive doesn't start, nothing. I then unplugged it, and plugged it back in, to find that it did this the instant I connected power to the machine's PSU. I tried jumping the SMC reset pads on the board, which also didn't do anything. It does not respond to the power button at all. I'm really at a loss here, so if anyone has any idea of what causes this issue, please let me know. This machine has a single 2.8GHz quad-core Xeon CPU (and single CPU board as well).