Tech Support Forum - View Single Post - Power Mac G5: Unexpectedly Quit, Kernel Panics, Bad_Access_Errors

Clever321 · 06-07-2009, 12:05 PM

Greetings,

I am running a Power Mac G5 2.5 GHz Dual-Core with two 512 MB DDR SDRAM. Looking to upgrade my overall performance, I purchased two 1GB sticks of compatible DDR SDRAM. About five to ten minutes after installation I began getting serious Kernel Panic and EXC_BAD_ACCESS errors in almost every application. Naturally, I assumed it to be bad memory. I sent back the RAM, received new RAM, and installed the two sticks only to begin having the same problems about five to ten minutes after installation. Figuring I couldn't be so unlucky as to receive two bad sticks in a row, I ran a TechTools inspection of my whole system and found nothing. I ran a disk repair, permissions repair, and even went so far as boot off Disk Warrior and do a restore of my HD. The problems continued. Next I assumed I had faulty RAM slots. I exchanged the RAM in every combination conceivable, old sticks in 2nd slots, new sticks in 1st slots, only new sticks in 1st slots, only new sticks in 2nd slots, etc., etc. The only combination that didn't cause problems was old sticks in any RAM slot. It became clear that I did not have any faulty RAM slots.

So, I refunded the RAM and decided to order from Crucial. The two 1GB DDR SDRAM arrived, I installed it, and the same problems arrived five to ten minutes after installation. Random "unexpectedly quits" by fault of EXC_BAD_ACCESS errors and the occasional Kernel Panic. I did the whole process of RAM slot swaps once again, new sticks in 1st slots, old in 2nd, new sticks only, etc., etc. Once again, the only working combination was only old sticks in any slot. I decided to return the RAM and try again with two new sticks. They arrived today, and the exact same problems have occurred, starting within the first five minutes after installation.

What the heck is wrong with my computer? Can i really be so unlucky as to receive 8 bad sticks of RAM in a row?

My computer worked and still works fine with only the two 512MB sticks installed in any slot.

This has been a long and painful process, so any suggestions/solutions would be greatly appreciated.

06-07-2009, 12:05 PM	#1 (permalink)
Clever321 Registered User Join Date: Jun 2009 Posts: 3 OS: Mac OS X	Power Mac G5: Unexpectedly Quit, Kernel Panics, Bad_Access_Errors Greetings, I am running a Power Mac G5 2.5 GHz Dual-Core with two 512 MB DDR SDRAM. Looking to upgrade my overall performance, I purchased two 1GB sticks of compatible DDR SDRAM. About five to ten minutes after installation I began getting serious Kernel Panic and EXC_BAD_ACCESS errors in almost every application. Naturally, I assumed it to be bad memory. I sent back the RAM, received new RAM, and installed the two sticks only to begin having the same problems about five to ten minutes after installation. Figuring I couldn't be so unlucky as to receive two bad sticks in a row, I ran a TechTools inspection of my whole system and found nothing. I ran a disk repair, permissions repair, and even went so far as boot off Disk Warrior and do a restore of my HD. The problems continued. Next I assumed I had faulty RAM slots. I exchanged the RAM in every combination conceivable, old sticks in 2nd slots, new sticks in 1st slots, only new sticks in 1st slots, only new sticks in 2nd slots, etc., etc. The only combination that didn't cause problems was old sticks in any RAM slot. It became clear that I did not have any faulty RAM slots. So, I refunded the RAM and decided to order from Crucial. The two 1GB DDR SDRAM arrived, I installed it, and the same problems arrived five to ten minutes after installation. Random "unexpectedly quits" by fault of EXC_BAD_ACCESS errors and the occasional Kernel Panic. I did the whole process of RAM slot swaps once again, new sticks in 1st slots, old in 2nd, new sticks only, etc., etc. Once again, the only working combination was only old sticks in any slot. I decided to return the RAM and try again with two new sticks. They arrived today, and the exact same problems have occurred, starting within the first five minutes after installation. What the heck is wrong with my computer? Can i really be so unlucky as to receive 8 bad sticks of RAM in a row? My computer worked and still works fine with only the two 512MB sticks installed in any slot. This has been a long and painful process, so any suggestions/solutions would be greatly appreciated.