So i need some advice... My pc has been locking up lately,at random times the picture just freezes and if any soun is playing in the backgrount it just goes into a loop of trrrrrr or something. I was pretty sure its the mobo that needs to be changed out but then i did a firestrike test and i noticed that it wont display my fourth ram module in the results section but its still displaying that i do hava all 16gb of ram,just not the slot. I have 4x4gb of ddr4 LPX ram on my msi z170a gamingpro mobo. I ran the windows memory diagnostic tool to check for errors but it didnt find any. I did also get a MACHINE CHECK EXEPTION error once,inbetween the freezings. Do you think its not showing the ram slot because the mobo is faulty or because the ram stick is faulty? My psu is a Corsair RM1000 and i tend to think thats not the problem,but who knows. Any advice is apreciated. http://www.3dmark.com/3dm/11371193?