A $2100 machine that I waited waited several weeks for. Problem #1: When it finally arrived the  HP Command Center software would not run because it claimed the drivers weren't up to date. All windows, NVIDIA , and HP drivers are up to date. Bigger Problem #2: The machine will not shut down by using 'ShutDown'. The monitor turns off,  but the machine just stays running. HP wanted me to run a bunch diagnostics on a machine that I've had for less thaqn 12 hours. I'll be damned if I'm going to spend lots of my time fixing problems on a computer that never should have left their door.RETURNING FOR CREDIT. Very disappointing!