I just purchased the Alienware m16 R1 from Best Buy and am attempting to upgrade the ram to 64gb.  I purchased 64gb of Crucial 5200mhz DDR5 from Amazon and attempted to install it.  The laptop would not even post.  I got two red flashes from the power button followed by four blue flashes.  I think that indicates a ram issue.  I also tried 64gb of known good Gskill Ripjaws 4800mhz ram and had the same problem, no post.  What gives?  According to the Setup and Specifications manual in Dell's support page for this laptop, this ram should be compatible.  I even shared a link to it with Dell sales and they said it was compatible.  I simply can't believe I'm locked in to only 16gb of ram on such a high end laptop.  Any help would be appreciated.  Dell tech support was useless.