Years ago I left window for apple products. If something broke on a windows I fixed it or went to a forum that helped others through their issues. I knew what to do. Now I have a new issue. This issue pertains to a mac causing me major troubles and I have no clue what to do or where to go. Not to mention I don't fully understand the iOS on a computer. Please help or point me into a good direction. Mods, if this is in a wrong place forgive me, don't penalize me, help me learn. The mac is a 2008 iMac that has el captain on it with 3 gig ram. I was told the HD was replaced with a newer one and the old one was not big so a 500 gig was put in. I hope to attach an image in this so you can see what I saw and tell me if it is normal or not. What I think is no it isn't normal, but what do I know. The computer will be used used by wife and children. for education and simple browsing. They use chrome. When I get the computer to turn on I get an apple logo with a status bar, horizontal, showing it is loading or something. Takes a while. I cannot hold down D and turn on for diagnostics. The spinning wheel of doom pops up very often and chrome will freeze often. Finder and search as well as dock froze. have to turn off sometime with power button. Have questions? I will answer them the best I can. Please and thank you for any and all help.