Simon-, on 11 May 2012 - 11:31, said:
When you boot off the SL DVD, does it Kernel Panic before it gets to the point of writing to the HDD? See if the SL DVD boots even with no Hard Drive installed? Ran the AHT Apple Hardware Test? Reset the NVRAM and SMC?
If it is not an I/O issue causing the panics (eg: HDD) it seems odd that both Memory modules would have the problem, so if the HDD & RAM are OK, maybe it is something less replacement friendly (Logic Board/Northbridge/CPU).
I assume that you have removed all USB devices except the keyboard to rule this out also. The fact that Windows and other boot discs are working I would not read too much into, sometimes these types of issues have a bit of a random factor to what symptoms you end up with.
thanks for a nice detailed post!
I boot from the DVD, I get the spinner under the Apple logo - thats where it Kernal Panics. It reads from the CD for a good few minutes and then goes.
I ran the AHT by holding the D key with the Leopard disk in the drive, and it freaked out. Oranges flashes and garbled pixels - not a good sign I'm sure.
I've reset the NVRAM - Not heard of SMC but after looking it up I've accidentally followed that procedure so we can rule that out.
I've nuked the HDD now with the same issues, so im not sure thats the issue but I'm trying to avoid taking out the HDD - seems i might have to give that a bash though.
I've also removed all USB devices and tried different USB ports on the back.
No joy I fear