Your board has defaulted the memory to 1066 speed.
You will need to manually set the speed, timings, and voltage or enable EXP if you have it.
What speed do you recommend me to put them on? On RAM it says 11-11-11-28-39, 1600MHz and 1.5V so should I go with that even though it's not the best quality RAM and it's 1 single stick only