There are times when the kiss method needs to be observed more often. Point in question wasted day looking for an issue on a brand name system using there diagnostic software. Suspected it was a hard drive but the system diagnostic application was saying all ok. I remembered that the drive manufacture made a tool to test drives as the system has 4 of them and it found the bad disk within minutes. Lesson learned should have went old school as soon as there tools would not confirm any issue even though there was certainly an issue with the machine.