Do a search for Charles Culp on here and check out what he recommends for a system. You can spend as little as ~$1200 on a decent, approved, system. The Radeon card is not approved and results may vary.
The two error messages your mentioned are, in my opinion, network based.
Thanks Jeff, I will recommend they get the right card for his system, if there is one that will work for his system.
The new HP is a Z420 and the specs are the same as the other two, except the process or is a Xeon E5-1620 and half the price of Boxx. I'm tempted to test drive the boxx system to show my Manager what it could do for me.