I purchased three for my company. Of the three, I had to return one because it would not boot.  All of the cases were damaged in some fashion where it took significant effort to remove the side.  All were once the property of a school district which had them configured to boot from the network, and to not show BIOS messages on startup. This caused the machines to take one to two minutes starting up while they were looking for their boot source from the network, and the bios had to be cleared by pushing the yellow button inside the computer so that I could configure them properly.  Once the bios was set correctly, start up time was much improved.