Hello all, I have been experiencing random crashes on my Early 2011 15" MBP. I have done many modifications to it, including SSD + 1TB HDD in optibay, AirPort card upgrade to BT4.0, 16GB RAM and thermal paste reapplication. All of the above had been working fine for the past couple years. All of a sudden the computer shuts down by itself as if I held down the power button. The error codes that it spits out for "Previous shutdown cause" is 3 and -128, neither of which are defined anywhere. Some suggest a thermal sensor error but I find this hard to believe as temperatures are well below average thanks to the thermal paste. I either suspect a failing GPU ("Radeongate" as it's known), static damage or corrupted system files. Hopefully it's the last one, as the other two are signs of a failing laptop. I am not able to boot into AHT at the moment, but will try again later. A related issue is kernel_task taking up 200+% of CPU. I suspect this is because the random crashes corrupted system files, and will write back after a complete wipe and restore on this. Another symptom is that each crash resets/corrupts the system date/time. It often defaults to December 31, 2000 at 4PM, but I have seen it drop a digit (e.g. it changes from November to January but the rest is the same). I've never seen anything like that. Anyone know what I can try or got a solution?