I posted this in the big SSD thread but thought it's better to start an individual thread for my two issues. So a friend and I spent 3+ hours opening (several times) my iMac and we got an SSD in now (OWC, it's pretty fast). My biggest issue is that the HDD fan is stuck at 0 RPM. I'm not sure if I messed something up in the installation (see next paragraph) or it's a software issue. I had one 'port' (for lack of knowing the word I mean) on the logic board that couldn't find a wire for was labeled 'HDD Fan' and sure enough, iStat and SMCFanControl both report the HDD fan is at 0. I'm not sure if this port every had anything plugged into it, or whether I just couldn't find the cable to reconnect. The teardown was unclear whether there's meant to be a plug in there. This COULD be because the HDD temp sensor is disabled because I've used a SATA Y Splitter for the power connector leading to the HDD to also power the SSD? Or is it because I failed to connect a cable (searched and searched once I got the logic board back in - couldn't find any missing cable). I'm reticent to copy a bunch of user files to the HDD until I confirm whether I have a lose or disconnected cable, or maybe it's merely the common HDD replacement Fan issue with a simple fix. Input greatly appreciated! Secondly, my built-in speaker doesn't want to work. I get the loud Apple chord when it boots, but when I hit the up/down volume buttons on the keyboard I get a crossed circle and system preferences shows only one audio device: encoded audio (optical). The built-in speakers aren't functioning. I thought this COULD be because I just cloned my user settings from my Mac Pro.... or do I likely have another disconnected cable? Since the boot chord plays, I'm hoping it's a software issue.