PSU and Overheating Issues - Start up posted in the Hardware forums; I just had a look it appears to try removing the graphics card and try to boot with the onboard graphics...
How much difference it would make... I can't say-- but according to Gigabyte "supported RAM list" for that mobo-- Gskill is NOT on the list.
It is a PDF file... http://www.gigabyte-usa.com/FileList...5-ds3l_1.0.pdf
link in My sig below to a free RAM tester.
One note-- it is a very basic app and will run until you tell it to stop.
An hour or two is plenty...if you get errors stop it