Little Weed’s neighbourhood friend has an Acer Aspire 5742z-4403 that was not functional. It would simply continue to cycle the boot process. He had suspected that his hard disk was bad but did not know how to prove it. I had him bring it to our house. in the end I proved that his hard disk was defective, the machine did boot up with Ubuntu and was fully functional. After connecting to the network with an RJ45, with Firefox we verified the internet worked. Summary: The computer works fine, the hard disk needs replacement.