Update of 03/02/15
No particular worries. Fan always a bit noisy in a quiet room but I got used. I had only one crash but left in the second, my job being backed up on drive time. I am in grade school and holds grossomodo 8-9 hours just for word processing (Google Doc, of course) with brightness of 1, no wifi, no bluetooth. The updates are very discrete and occasionally ask to reboot the PC to be used. We see that the fire is very discreet! The screen has no dead pixels. I take really enjoy using this OS. Certainly very little in the direction of customizable Linux but for this use, I have another Windows PC (I boycotted so I love my HP).
I bought a hull with little feet that fold because some consumers have said that white, the PC is soiled. With the shell I have no worries!