MacPro 4,1 2009 booting first, freezing afterwards no chime no Video
Hello dear forum,
I ve revived my MacPro 4,1 from the death in my basement.
It Starts correctly, chimes and boots in High Sierra but After 2 Minutes / or some load like ‚about this Mac ‚ it freezes and After 1 minute freeze it reboots.
Then it has no video no chime no Boot. So Self Test is Not succeeded.
If you wait some time And start you get the chime back And it freezes earlier.
things i have Tried:
all resets (pram and so on)
diag leds Show everything ok
Changed Power supply to 100% working one
Any ideas ? Bad CPU which cause Kernel panic?
Please give me your opinions.
Ist dies eine gute Frage?