I had a system that acted like this before and it was a hard drive that wasnt healthy. If you can somehow get crystaldiskinfo to run on this system after the computer first boots, you can check the SMART data on the hard drive and see if the drive is healthy. If it shows up as Warning in Yellow then the hard drive would need to be replaced to fix for system health. If its Good in Green then the problem is somewhere else such as main board or corrupt build to which you will want to install the OS clean to the system.