Trying to benchmark, computer restarts, Ubuntu 14.04

[epixoip]

Sounds like you're tripping the circuit protection in your power supply. Looks like you have 4x 7990 or 8x 7970, how big is your power supply?

I installed the driver that i downloaded from "http://geeko.ioda.net/mirror/amd-fglrx/raw-src/" because I couldn't find it in AMD official webiste.

I thought you were crazy, but nope, looks like AMD pulled the download links for 14.9! http://support.amd.com/en-us/download/de...inux%20x86

Anyway, it's not really a good idea to download kernel code from some random site. A far more reputable mirror would be https://github.com/stricture/fglrx

Uninstall your graphic drivers and install 14.9 (you seem to have 14.3 unless I am totally wrong).

Nope, fglrx 14.301.1001 is Catalyst 14.9