If you are in need to take you iMac apart to replace the Hard Drive, Dvd-Rom, etc. then check out the following videos showing what tools you need as well as the proper steps to get the job done.
The reason for doing these video is because when I was asked to find a good online "How-To" for taking apart an iMac I came across a number of videos where users just showed that you simply take the four scews out of the bottom of the panel and pull the panel off.... they failed to show you that you need to also disconnect the panel from the top as well.
In these videos I will show you how to properly remove the front panel as well as LCD so you can gain access to the inside for repairs.
With this I have also done up a video showing you how to make a Free Apple Access Card Tool which is needed to remove the front panel from your iMac.
iMac Take Apart - Part 1 (Remove Front Panel)
iMac Take Apart - Part 2 (Remove LCD Panel)
Make your own "Apple Access Card Tool" for Free
If you have any questions please feel free to post below, YouTube or Contact Me