Erase and zero a hard drive, then install a fresh OS X.
Doing this will tell you if the kernel panics are software based (quite possible).
Don't skimp, do zero the drive (1 pass)......
Leave out 3rd party software. After a fews starts and test runs, install only what you need, incrementally, testing as you go.
Airport/Bluetooth module is installed?
Likely the wires are wrong, especially if the previous owner was DIY....
Currently Being ModeratedMay 1, 2012 3:22 AM (in response to japamac)
Thanks alot for the reply
I have tried that already (sorry I should have mentioned that ) I even had a new drive I was going to stick in a different system and tried that in stages of Leopard, Snow leopard and Lion.
I just installed the Garageband package and left it on a loop and it crashed eventually on all.
If this is any good I have built alot of PC's in time (but obviously Macs are a little more advanced haha)
I shall check the wires like you have said. The bluetooth module seems to work fine but the wifi def doesn't which is annoying. I shall check wires like you have suggested
Any other ideas please?
Experience building PCs helps in that you are less afraid to pull and reseat components, all very important in troubleshooting.
RAM is always a concern when random crashes occur.
The AHT is "all or nothing" when it comes to RAM tests, so testing with Memtest X or Rember is best.
Be sure to test ALL the RAM.
Cycle slots, if you can, to be sure.
You can look through system logs in Console to find crash reports, hung processes, or just hints as to what is occurring around the time of a failure.
Just note the time of a crash/freeze, then after restart, browse the logs to the time of and prior to.
Not 100%, but better than kicking around in the dark.....
Airport modules can go bad, and even poor seating can panic and crash a machine. You might try removing and running without the Airport card plugged in. If a crash/freeze occurs without the Airport card, well, you've eliminated one possibility.
Currently Being ModeratedMay 1, 2012 4:56 AM (in response to japamac)
Hi thanks for your help!!!
I have done the long memtest (well asked a family member to do it) and they have said slot 4 came up with an error. I asked them to remove the to big memory boards and leave one out and change the ram stick in there. It appears the same again mem4 (even with a different ram stick) If i try the large memory board in the slot below it appears the same. If i switch boards and repeat the above it appears the same ?!?!?!
Do you think this is a glitch or is it any help to you?
I shall try the airport card when i get back although the previous ower looks to have over tightened the screws and rounded the heads sligthly (helpful!!!)
Thanks again for your help
FBDIMMs do run hot which is why you should not just open and touch or leave the door open, but wait 10 minutes after shutdown before opening. Mine stay quite nice 60-68*C
Run SmcFanControl 2.3+ ~ a must to boost fans 400 rpm
Use one good thermal monitor tool ~ Hardware monitor is what I use for last 10 yrs
SMC RESET button - yours has a button near PCI slot #4 and drive bay #4
Apple Hardware Test
Memtest - run 256MB chunk of memory in each terminal window and run as many as you need for 4-5 loops each
PRIME for OS X
Make a list, check off items, there are a lot of things to go through.
A new drive and zero all is okay but will not spot weak defective sectors using Disk Utility. There are tools that will, like WD Lifeguard excellent and of course what you want on WD drive.
they have said slot 4 came up with an error. I asked them to remove the to big memory boards and leave one out and change the ram stick in there. It appears the same again mem4 (even with a different ram stick) If i try the large memory board in the slot below it appears the same. If i switch boards and repeat the above it appears the same ?!?!?!
A Memtest error is not to be ignored.
With all DIMMs showing an error in slot 4, but no errors in any other slot (?), one could surmise that there is a fault in the memory riser with slot 4 (but is it upper or lower?).
I would run the machine with memory installed in only slots 1 and 2, using both risers if 4 DIMMs are available.
This brings up the point of memory installation. You are following this (following link) installation positioning, correct?
Using up to 4 DIMMs, can Memtest run without error?
Using up to 4 DIMMs, can the machine run without freeze/crash?
noticed the Ram section was really hot could it need a replacement fan?
FB DIMMs are notoriously hot, and they have a reputation for early failure.
I am sure that the heat is also bad on the memory risers.
Additional cooling might not be a bad idea.....
It might also be worth replacing the riser, once upper or lower is determined and slot 4 of said riser continues to throw errors (providing memory is otherwise correctly paired and installed).
Not necessarily here (or here), but, like this:
Currently Being ModeratedMay 1, 2012 6:34 AM (in response to japamac)
The same appears in both slots on both risers which I just find a bit odd? and with different Ram sticks etc. I checked the Ram documents and all above is A'ok. does that tell you anyhting lol?
I shall look into cooling aswell maybe is it was very hot! I will try that fan control software The Hatter suggested as I've heard that is good aswell!
DVWarehouse has Risers but more expensive:
The ideal is 4 x nGB using A1:2 and B1:2
So you could do w/o using slots 3&4.
A2 for me has always been the warm spot.
Just put these into my system
I tried the fan control software first and it hasn't crashed since!
Looks like hot RAM was your problem.
Errors with the RAM when hot, however, can be written to data on hard drives.
Make sure your system drive (and others) are properly repaired with (minimum) Disk Utility or (best) Disk Warrior.