One last thing to try, check the new ram to see what voltage it operates at. A lot of the higher performing ram operates at 1.6-165V but the motherboard sometimes need intervention to do this.
If you feel you can do this, boot the computer with the old ram, enter the bios and set the ram voltage to 1.6V (technically it's an overclock setting), save the config and swtitch off the pc. Swap the ram out for the new stuff and boot the computer.
Both sets of rams run at 1.5V checked them both in the CMOS setup utility and the Kingston has it displayed on the ram itself.