Does Centos 6 and gnome support i7 hardware?

I have installed Centos 6 on a new HP laptop HP PROBOOK 430G1. While booting I see the message

Detected CPU model 6 family 69 *unsupported hardware device : Intel CPU model*

Inspite of Centos installing successfully when the machine boots up there is no GUI just the command line. Seeing this I tried installing the gnome desktop using the command yum install gnome*

This also installed properly but after rebooting, the machine still boots to the command line. After which I have to type the startx command to start the GUI. However this only works for the root user and not for any other user. Logging off the root user causes the machine to crash. I have also tried changing the run levels but this just causes the machine to hang during boot up.

Even installing Centos as a virtual machine on the laptop gives the same problems.

My questions are these....

1. Is there any other solution to have the GUI start by itself during boot up ?
2. Is this a problem with Centos itself. As in the hardware is not supported ?
3. Or is this a problem with gnome. As in the hardware is not supported ?
4. Do I need to change any display settings ?

Thank you in advance

It seems quite FUBAR to me. As it looks like fresh installation I suggest to reinstall the system using graphical installer (to be sure the graphic hw is working properly).