I already thought about a similar solution but I cannot accept such solution. Since many of the users including the most experienced ones are using MacPro3,1, MacPro6,1 should be good enough.
M problem is another one: yesterday I rebooted multiple times to check that after SSDT, MacPro6,1 ... everything was working ok. I also checked sleep and wake up multiple times. No problems.
This morning I found the computer "on" (well, the light was on) even if I left it in sleep before going to bed.
I forced it off (because everything was black) and now I cannot even get into the BIOS. The keyboard is powered on because the logo in it is lit, the monitor "feels" some signal for some seconds in the beginning, but then goes back to power-save.
the mouse is connected but its LED light is off therefore I cannot say that BIOS is working but I miss the video signal: if BIOS were working I would get the light on the optical mouse.
The LEDs on the ethernet connector are lit, the motherboard is not dead (I can also hear the fans spinning up and then down upon power-on).
Since I cannot even get into BIOS, and since I tested reboot and sleep multiple times yesterday, I would say it's not related to OSX or bootloader or that stuff, it may be an hardware or some other issue.
After 10+ years of Mac, I have no more experience on the topic. Do you have any idea?
My plan:
- disconnect everything, power included
- keep only two sticks RAM
- keep video card, since I have no iGPU
- reconnect keyboard, monitor, mouse, turn on again.
- if not working, reset BIOS (but I think I have double BIOS, the backup copy should work anyway).
Anything else?
Thanks!
Edit: I realise this may be off-topic here. Feel free to move this post to a new topic if needed.
Edit 2: the computer is behind APC smart-UPS, spikes in the power grid are filtered.