
NVIDIA GeForce GT 650M with 512MB of GDDR5 memory (15-inch 2.3GHz configuration) or NVIDIA GeForce GT 650M with 1GB of GDDR5 memory (15-inch 2.6GHz configuration) and automatic graphics switching.2.6GHz quad-core Intel Core i7 processor (Turbo Boost up to 3.6GHz) with 6MB 元 cacheĬonfigurable to 2.7GHz quad-core Intel Core i7 (Turbo Boost up to 3.7GHz) with 8MB 元 cache.2.3GHz quad-core Intel Core i7 processor (Turbo Boost up to 3.3GHz) with 6MB 元 cache.Configurable to 1680-by-1050 high-resolution glossy or antiglare display.15.4-inch (diagonal) LED-backlit glossy or optional antiglare widescreen display with support for millions of colors.So, bottom line, is there any way to be completely sure that it's due to the I/O board, and/or any good way to fix it? Any help will be very appreciated and will hopefully help others in the future too. Logic tells me that it's the I/O board which is fooling around, but given my current financial situation, I don't want it to be. I'll try an SMC bypass and see if that does anything at all and update on this. I did an SMC and PRAM reset, though it's unclear if it did anything at all.


The battery indicator shows a 100% charge, as does Coconut Battery, which should mean that it's not the SMC. After a while of being mildly annoyed by it shutting down, I began testing the battery in TechTool, which gave me virtually no information save for the fact that the battery is just maintaining its charge, but not actually getting any.

I just pinned it down to magnets or magic. I've had this problem before, which went away after a short while by itself. Around two days ago I was about to move my workhorse to the kitchen, to do some culinary research (read: how to boil potatoes) when my MacBook just turned off when I disconnected the charger.
