I bought this Macbook Pro about a year and a half ago, with no apple care. Several months ago it began having an issue where it would sporadically say ‘not charging’ regardless of how much charge the battery had. I tried a good battery and charger, ran utilities, and reset the power management thing several times, nothing helped. The battery still charged, just extremely slowly, and it still said ‘not charging’ and the magsafe remained green. A few weeks ago I installed a new harddrive (which didn’t solve the charging issue) but there weren’t any other abnormalities. About a week ago my computer started dying randomly, at first whenever it was moved even slightly, and thereafter would die randomly and unprovoked. Then the new hard drive seemed to go bad, in that it would run for about thirty seconds and then spin for a minute or two down, so that, if you are transferring a file it would transfer in small intervals and take forever, also, the system would freeze every time it spun down. I reformatted the hard drive and reinstalled the system, but even during the installation process it would do the same thing. I reinstalled the original hard drive which had been unaltered since its removal. It had power, but the system did not recognize it at all, except for one interval of about a minute where it briefly appeared then went away again. To be safe I sent the new hard drive back for a replacement and I ordered a new flex cable. I am currently running my system off an external usb hard drive. It is working normally, but the computer still dies at random intervals. I’m not sure if these problems are related. I know it isn’t battery, power supply, or software related. I tend to think it all stems from some power issue. I’m not sure if its the I/O board, some cable, or the Logic Board. I don’t want to keep spending money on parts that don’t need replaced, especially if the problem is ultimately the Logic Board. Sorry that was kind of long, but I’m having a lot of problems Any help would be greatly appreciated.