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Mac book Pro late 2008 keep restarting and kernel panic - please help  


New Member
Joined: 1 year ago
Posts: 1
April 8, 2019 4:39 EDT AM  

I really need some support from the Mac community. Here’s my problem:
I own a Late 2008 Mac Book Pro serial W88492RM1G0, 2,4 GHz Intel Core 2 Duo, 8 GB DDR3 a 1333 MHz ( I upgraded the RAM few years ago, originally mounted the 1066 Mhz), NVIDIA GeForce 9400M 256 MB, 1 Tb Fusion Drive with 550Gb SSD and 500Gb HD.

It worked fine until 1 years ago it started having serious issues of power supply. The input of the power supply became very hot, and the Magsafe did not worked properly. The pins were stuck. I changed the Magsafe, but the new lasted few months then started again.
I changed the input on the computer but still it become very hot

Then bigger issues came up:
it freezes if I move it, or even alone, and then shows kernel panic messages.
it restart from nothing, when I work
Sometimes it does not restart and when restart there’s a beep message: 3 long beeps and 3 short beeps. It stops only if I force the shutdown
Sometimes it shows the wrong way sign, once even a half apple.

Please advice on what is the issue, and how to solve it. I’m considering buying a new one, of course, please do not waste our time with such advices. I spent 300€ on new SSD and other works, I ‘d like not to lose that money.

Thanks from the core for your help


Graham McKay
Reputable Member
Joined: 4 years ago
Posts: 317
April 8, 2019 4:54 EDT AM  

I'm pretty certain there is an underlying hardware problem that is causing the kernel panics and the startup problems.

One possibility is the after market RAM that you have installed. You can try a memory checking utility (eg. Memtest86) or if you still have the original memory stick you could try swapping those back in. All memory sticks are guaranteed for life so if you do isolate a fault you should be able to get a replacement.

Just in case the issue is related to the replacement hard drive, perhaps try booting from an external drive to check if the problems still occur.

If you have any other checking utility, such as Tech Tool Pro, run it as well in case it highlights any other hardware, or sensor, issues.

Otherwise, particularly for a laptop, the issue may be within the hardware of the motherboard and could require a repair shop to completely diagnose. Full replacement of a motherboard in a Mac that old probably isn't worth it unless a cheap 2nd hand one is readily available.

Reputable Member
Joined: 11 years ago
Posts: 349
April 9, 2019 6:03 EDT PM  
Please post a few of the most recent Panic reports.
Look for the Kernel Panic reports at:
Finder -> Go -> Go to Folder -> /Library/Logs/DiagnosticReports
The panic report should have "panic" in the file name.

Eminent Member
Joined: 2 years ago
Posts: 20
April 10, 2019 1:27 EDT PM  

I wonder, given the heat problems, if your fans have died, or if you accidentally disconnected one or more of them when you installed your SSD. iStat Menus (often touted by Dave and John) will report fan status I believe (I've not used it recently).

If your fans have died, iFixit sells them for your 2008 model.