I have a 2007 Mac Pro that is my production 'puter and was running tip top under Leopard. From the day I upgraded to Snow Leopard, it started crashing: black screen and then restarting.
I booted off a 2nd drive that was a mirror of my main drive before I installed SL on it and the crashing continued which rules out drive #1 being bad or a bad install on it issue. Must be hardware related.
I've been to the "Genius Bar" twice now and they discovered that if they pulled the lower RAM riser card (I have 8 single GB modules) and ran the MP with just the upper card and 4GB, it didn't crash BUT concluded it was the logic board. Hmmm.
I'm now further testing: I have the original Apple 4 GB sticks and 4 OWCs. The upper riser card with the OWC sticks didn't crash the MP. I'm now trying the 4 Apple sticks (as I type) and so far so good. So bad RAM doesn't seem to be the issue.
I'd like to know:
1. Can I use the lower RAM riser card in the upper position so I can test the RAM?
2. Can I run the MP with just 1 riser card in the lower position, or does it have to be in the top
3. Is it "possible" that an OS installation could harm a riser card or logic board?
4. Can I use 'DeoxiIT D5' to spray the riser card slots on the logic board in case the problem is dirty contact points?
I booted off a 2nd drive that was a mirror of my main drive before I installed SL on it and the crashing continued which rules out drive #1 being bad or a bad install on it issue. Must be hardware related.
I've been to the "Genius Bar" twice now and they discovered that if they pulled the lower RAM riser card (I have 8 single GB modules) and ran the MP with just the upper card and 4GB, it didn't crash BUT concluded it was the logic board. Hmmm.
I'm now further testing: I have the original Apple 4 GB sticks and 4 OWCs. The upper riser card with the OWC sticks didn't crash the MP. I'm now trying the 4 Apple sticks (as I type) and so far so good. So bad RAM doesn't seem to be the issue.
I'd like to know:
1. Can I use the lower RAM riser card in the upper position so I can test the RAM?
2. Can I run the MP with just 1 riser card in the lower position, or does it have to be in the top
3. Is it "possible" that an OS installation could harm a riser card or logic board?
4. Can I use 'DeoxiIT D5' to spray the riser card slots on the logic board in case the problem is dirty contact points?