Model A1001 or A1025 / 667, 800, 867, or 1.0 GHz G4 processor

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repeated crashes after memory upgrade

I upgraded my G4 Titanium 867 DVI memory from 512MB to 1 GB. The computer recognises the memory. System profiler says its OK. After a few minutes of operation programs start crashing, then the computer crashes. I re-installed the memory twice but the problem persists. Reverting to the old memory chips removes the problem. I am running osx 10.5.8

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You solved the problem. Please tell us all about the new RAM.

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The new RAM is labelled SMT 512MB SO DIMM PC133 8300UC www.siliconmemnory.com. Each module has 8 chips on each side, six in a row and two at right angles behind.

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Some RAM chips that are made for PCs will not work in MACs. I do not recognize the SMT and could not find RAM listed at www.siliconmemory.com. I would get RAM from a suppliers that specifically handles MAC such as:

http://www.ramdirect.com/51pbg4tisopc.ht...

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I bought the RAM from a MAC specialist. From my research on the internet it seems identical to that being offered by a number of RAM suppliers for this particular computer. I'm in Hobart, Australia, so my sources are limited. If I can't solve the problem I'll return it to the supplier and order on the internet. I'm wondering whether resetting pram or pmu might help. Haven't tried that yet.

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I don't think it will help but try removing the battery and AC, hold the power button for 10 seconds and then retry it. Just tell your supplier what is happening.

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Thanks, I'll try that. If no result I'll contact the supplier for advice tomorrow. I thought perhaps it might be a common problem with a simple answer, but it appears not.

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