MacBook Pro 13" Showing error message and restarting constantly

[j_pratt57]

After trying to install OS X Mavericks on my MacBook, at start-up, it shows an error message in the black and white coding. it says:
"panic(cpu 2 caller 0xffffff802afce2f4): "Process 1 exec of /sbin/launchd failed, errno" and so on.. After displaying this coding, the computer restarts again then comes up with a message saying that the computer had to restart due to an error and to hit a key or wait to continue starting your macbook. After the error message goes away, the apple start up screen appears and shortly after that the same coding error pops up and it restarts itself again. This cycle happens about three times before it comes up with a blank screen with a circle with a line through it, then the computer shuts down. I have no idea what to do, as I do not know a whole lot about computers. Can anyone help, or has anyone had the same problem?

 

[harryb2448]

And what computer is this on and where did the Mavericks download come from?

 

[j_pratt57]

The problem is on my MacBook Pro, and I believe the Mavericks download was just another software update from the App Store, at least that's what I thought it was; but like I said, I really don't know much about computers in this sense. I recall having another issue with my MacBook back in 2012, it was different than this current issue, but I did try to locate the disk that it came with and after not finding it in the original box, I went to the internet and if I remember correctly, the MacBook I bought in 2011 did not come with a physical disk, as there was some sort of equivalent already built into the laptop.