Parts or repair-Please read complete description carefully-no returns!&nbsp;<div><br></div><div>There is a bottom cover, I just took it off so you can see the inside! It is reattached!&nbsp;<div>The pictures give an illustration of what I have tried. First the blinking error because there is no o/s installed. I tried Option-Command-R and got the error -5101F. Then I tried command-D to install from the internet which brought me to the disk utility. After erasing again I tried to install the o/s. It gets almost all the way through then it gives the error of a problem installing. I then tried checking/changing the date in the Terminal. Tried installation again but the same results. I am NOT a Mac repair shop and very limited to what I can do. Maybe it needs to be loaded from a disk which I don't have. With all this said, you are bidding at your own risk. NO RETURNS or REFUNDS. No Power cord although the battery is fully charged right now!&nbsp;</div><div><br></div></div>