[cubedata]

@cubedata : I think he wants to know if the problem is hardware related.

@Zorono : Try to Centos 6 or 6.5 and see if it works. Centos known to have network problems in KVM servers. If still it doesn't work then get another vps with OpenVZ from next give away. It's only about 2 weeks to next one.

not a hardware issue at all, you just have to know how to run the centos 7 installer though from the iso as I mostly on the xen hvm vm's install them via iso too and know I never have issues