Chosen Solution
Hi guys, I’m Experiencing random kernel panics with my MacBook Pro 13" Unibody Late 2011. First with old ram ‘‘I received random kernel panic. MCA error-reporting registers: IA32_MC0_STATUS(0x401): 0xb200000000030005 valid MCA error code: 0x0005 Model specific error code: 0x0003 Other information: 0x00000000 Threshold-based status: Undefined Status bits: Processor context corrupt Error enabled Uncorrected error IA32_MC1_STATUS(0x405): 0x0980000000000000 invalid IA32_MC2_STATUS(0x409): 0x0000000000000000 invalid IA32_MC3_STATUS(0x40d): 0x0000000000000000 invalid IA32_MC4_STATUS(0x411): 0x0000000000000000 invalid IA32_MC5_STATUS(0x415): 0x0020000000000000 invalid IA32_MC6_STATUS(0x419): 0x0020000000000000 invalid ‘’. I thought it was a RAM issue so I changed the slot but same problem. Then I changed my corsair 4 GB stick (CMSA4GX3M1A1333C9) with another 4 GB corsair. Panic still present but less frequent with a different kernel panic. Then I switched to 2x2GB Sticks but same problem. I then changed my hard disk to a new SSD: same problem. I then cleaned PRAM and SMc: same kernel panic. I really don’t know what to do next. The basic setup I put for testing is: Chrome opened with youtube, Safari opened with Youtube, xcode and eclipse opened. In 2 hours the system will kernel panic. Anyone has a new idea to test? Could it be a logic board problem? Maybe I’m so unlucky that I tried 3 different ram sticks and all of them are slightly incompatible to cause this random kernel panic? Thanks
Experience, to me, indicates a bad hard drive/IR cable that may or may not have corrupted your hard drive. If you don’t have an external back up drive I would get one. Back up your user data ASAP. Try starting up in Safe Mode by holding down the Shift key on start up. If you have another Mac available try repairing the hard drive in Target Mode. After you have your user data backed up, erase the drive using the “write zeros” option in Target Mode. Start up with a black drive and an internet connection to see if you can download and install a new system. But after trying all this and failing, replace the HD cable with a new one (no used parts here) and hope it hasn’t destroyed your hard drive.
