Finaly my water loop is up and running, but still i have unknown issues with my system. Games freezes randomly for unknown reason, movies randomly gets anomalies (like artefacts) and when i close the viewing program (bsplayer or wmp) the system hangs. Anybody has a clue what's going on? Tried diferent PSU's, have new CPU, GPU has ben changed, nothing helps... Today i have tried my luck with new bios, nothing else comes to my mind, except bad drivers, or maybe my mobo or ram is causing problems?

BTW everything is at stock