I recently purchased 8gb of ram to add to my other stick of DDR3 memory. After I added it, a screen popped up saying windows failed to start. I dont have the windows disc and it says my boot configuration contains errors. Is it because my ram contains 1x 8gb stick and 2x 4 gb? They are both 1600mhz and i cant find a boot option that would allpw me to start my pc with the new ram.