The PC arrived with a defective hard drive. It wasn't even necessary to run full diagnostics to determine the status. The Self-Monitoring, Analysis, and Reporting Technology (S.M.A.R.T.) built into the drive by the manufacturer showed an error log. I'll be spending my weekend trying to resolve this mess since my customer expects delivery on Monday! This will be the LAST refurb I ever sell since it's obvious the vendors only care about the external aspects of the product and don't even run the simplest diagnostics on the components.