Chosen Solution

I’ve changed the harddrive and removed the cd rom. When I noticed that the new harddrive didnt work I put the old hdd back. After that change the fan goes max when I start the computer and after 5-8 min the computer shuts itself down. To add to this problem when I changed back to the old hdd the wifi doens work I get the message “hardware not installed” on the Icon message.

Starting with the WiFi problem: Did you damage the camera data cable or not correctly connect the cable? Review this guide Steps 5 ~ 7 MacBook Pro 13" Unibody Mid 2009 AirPort Card Replacement What was the drive you put in? Make and ModelWhy did you remove the optical drive? If you put in a second drive what did you put in?