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Help, I replaced my SSD drive and my iMac was crazy fast it was AWESOME. 7months later the LCD screen came crashing down. {I guess the double sided tape I bought from crucial.com was not that great} Replaced my LCD screen and my computer is SO SLOW and the fan runs at full speed. Download TG Pro and turn off the fan but what do I do about my SUPER slow computer. Do I have to open my IMAC back up……… Thanks in advance……… pretty over it! :-)
Sounds to me like some sort of overheating issue. Processors usually slow themselves down when hot and the fans run at full speed to try to cool the processor down. That might also explain the monitor falling off as a result of the heat; adhesive does not hold well when hot. Does the Mac feel hot to the touch, and, is it slow right away at startup?