The tower arrived with improper packing.  When you moved the box you could feel it hitting the sides of the box.  And sure enough, when I started it up I got the HP 5 beep problem (I'm sure everyone knows what that is :-) ).  No display, DOA.  Turns out I just had to remove then put back in the 4 memory cards but who knew?I got it going and activated Windows but the first Windows update put the machine into reboot purgatory.  Ugh!I decided to purchase a new Windows license and I installed it from scratch.  Finally the PC is working well.Update - memory SIMMS (DIMMS) got unseated again.  Or was it the motherboard?  PC wouldn't boot.  Once I reseated them, it booted again but the problem corrupted at least one of the system network files.  This is horrendous!  Do NOT buy this machine.But should it be so hard?  No way.