[SOLVED] Old Macbook Pro freezing

[LML]

I have an early 2008 MBP that I've had unexpectected restarting issues for a while now. I've posted previously on another forum with no luck. I am tempted to ditch it, but thought I would ask here for some help first.

I use it mostly for web browsing, so it happens using firefox and chrome (don't recall it happening at other times or with other apps). I've since upgraded to 10.8.5 and it has the same problem as it did with the previous OSX version I had installed.

I have been getting kernel panic logs (for some of these restarts, but not all). I pasted an excerpt of one below.

Many thanks for your tips/ideas

ML

___________________

Wed Dec 31 09:37:39 2014
Machine-check capabilities 0x0000000000000806:
family: 6 model: 23 stepping: 6 microcode: 1548
Intel(R) Core(TM)2 Duo CPU T9500 @ 2.60GHz
6 error-reporting banks
threshold-based error status present
Processor 0: machine-check status 0x0000000000000005:
restart IP valid
machine-check in progress
MCA error-reporting registers:
IA32_MC0_STATUS(0x401): 0x1000000000000000 invalid
IA32_MC1_STATUS(0x405): 0x0000000000000000 invalid
IA32_MC2_STATUS(0x409): 0x0000000000000000 invalid
IA32_MC3_STATUS(0x40d): 0x0020000000000000 invalid
IA32_MC4_STATUS(0x411): 0x0000000000000011 invalid
IA32_MC5_STATUS(0x415): 0xb200001806000e0f valid
MCA error code: 0x0e0f
Model specific error code: 0x0600
Other information: 0x00000018
Threshold-based status: Undefined
Status bits:
Processor context corrupt
Error enabled
Uncorrected error
Processor 1: machine-check status 0x0000000000000004:
machine-check in progress
MCA error-reporting registers:
IA32_MC0_STATUS(0x401): 0x1000000000000000 invalid
IA32_MC1_STATUS(0x405): 0x0000000000000000 invalid
IA32_MC2_STATUS(0x409): 0x0000000000000000 invalid
IA32_MC3_STATUS(0x40d): 0x0020000000000000 invalid
IA32_MC4_STATUS(0x411): 0xf200000000060151 valid
MCA error code: 0x0151
Model specific error code: 0x0006
Other information: 0x00000000
Threshold-based status: Undefined
Status bits:
Processor context corrupt
Error enabled
Uncorrected error
Error overflow
IA32_MC5_STATUS(0x415): 0xb200003008000e0f valid
MCA error code: 0x0e0f
Model specific error code: 0x0800
Other information: 0x00000030
Threshold-based status: Undefined
Status bits:
Processor context corrupt
Error enabled
Uncorrected error
panic(cpu 1 caller 0xffffff800d4b91b9): "Machine Check at 0x000000010e0971c0, registers:\n" "CR0: 0x0000000080010033, CR2: 0x00000bbb273ce008, CR3: 0x000000003d73a000, CR4: 0x0000000000000660\n" "RAX: 0x0000000000000003, RBX: 0x00007f9f83282388, RCX: 0x0000000000000000, RDX: 0x0000000000000012\n" "RSP: 0x00007fff53477c50, RBP: 0x00007fff53477c90, RSI: 0x0000000000000000, RDI: 0x00007f9f8339a190\n" "R8: 0x00007f9f82bc8270, R9: 0x0000000000000000, R10: 0x0000000000000000, R11: 0x0000000000000000\n" "R12: 0x00007f9f8339a2a0, R13: 0x0000000000000000, R14: 0x00007f9f8339a190, R15: 0x00000000ab6e48ce\n" "RFL: 0x0000000000010247, RIP: 0x000000010e0971c0, CS: 0x000000000000002b, SS: 0x0000000000000023\n" "Error code: 0x0000000000000000\n"@/SourceCache/xnu/xnu-2050.48.12/osfmk/i386/trap_native.c:280
Backtrace (CPU 1), Frame : Return Address
0xffffff80806e5ec0 : 0xffffff800d41d636
0xffffff80806e5f30 : 0xffffff800d4b91b9
0xffffff80806e60a0 : 0xffffff800d4cf4df

BSD process name corresponding to current thread: Google Chrome He

Mac OS version:
12F45

Kernel version:
Darwin Kernel Version 12.5.0: Sun Sep 29 13:33:47 PDT 2013; root:xnu-2050.48.12~1/RELEASE_X86_64
Kernel UUID: EA38B02E-2B88-309F-BA68-1DE29F605DD8
Kernel slide: 0x000000000d200000
Kernel text base: 0xffffff800d400000
System model name: MacBookPro4,1 (Mac-F42C89C8)

System uptime in nanoseconds: 5987989073679
last loaded kext at 316116407193: com.apple.filesystems.smbfs 1.8.4 (addr 0xffffff7f8f5fb000, size 229376)
last unloaded kext at 199817667607: com.apple.driver.AppleFileSystemDriver 3.0.1 (addr 0xffffff7f8f50b000, size 8192)
loaded kexts:

 

[Vembutech]

Hi,

Try this;

1. Marginally defective RAM. May pass a hardware test many times yet have a bad bit here or there that never gets triggered.

2. Bad hard drive. Have you tried formatting it using Zero Data one-pass?

3. Reinstalling but skip 10.6.8 update and do not restore your Home folder or files.

 

[LML]

Hi,

Try this;

1. Marginally defective RAM. May pass a hardware test many times yet have a bad bit here or there that never gets triggered.

2. Bad hard drive. Have you tried formatting it using Zero Data one-pass?

3. Reinstalling but skip 10.6.8 update and do not restore your Home folder or files.

thanks Vembutech! this will give me some things to try. Just to clarify, are you suggesting I go back to an earlier OS? (I have 10.8 installed now)