I got a used macbook about 3 months ago, it's the second I've bought and had no issue with it up until about a month ago, when it started giving me the fatal error and saying "please restart your computer" and freezing up. I tried to run disk utility on it and it basically said my hard drive had fatal errors and it couldn't fix it. So I bought a new hard drive. Got my hard drive today, put it in the macbook, reinstalled OSX Snow Leopard, and it ran fine for about 5 hours, and I was happy as can be... now suddenly, it has started doing this again, and it's really starting to p*ss me off because I've spent so much on a "recertified" macbook that apple won't fix without a crap load of money, and I'm not even sure what is going on with it..
I've tried to boot it in safe mode, and it acts fine for about a minute, and then any program I try to open it says it can't "find it" and shuts down. If I try to open system preferences to bring up the specs it immediately freezes and gives me the "hold down power button to restart" stupid thing.
When I restart it, sometimes it'll come up and then shut down, and other times it immediately pops up and says something about a fatal kernal error. If I can get it to do the fatal kernal error message again, I will happily post it on here so you can see what it says, but at this point I am seriously ready to just trash this pos and go back to using windows computers because this now makes 3 macs (two macbooks and a imac) that I've had that all start doing this, and it's baffling because I don't download stuff on the internet, etc. I mainly use my macs for recording music.
Also, don't know if this helps or not, but in the few instances where it does boot up and won't shut down immediately, if I click on say Apple>About this Mac.... as soon as I click on it, the screen goes blue, and then a few seconds later it comes back like it's just fine.
I don't know what all you guys would need to see anything, but last time it booted up I was able to get this information before it crashed again:
Model Name: Macbook
Model Identifier: Macbook2,1
Processor: Intel Core 2 Duo
Processor Speed: 2.16GHz
Number of Processors: 1
Total numb of cores: 2
L2 Cache: 4MB
Bus Speed 667MHz
Boot ROM Version: MB21.00A5.B07
SMC Version (system): 1.17f0
Hardware UUID: 00000000-0000-1000-8000-001B6335249D
I know that's just the basic info under hardware but I couldn't get any further than that. It goes blank screen and shuts down.