New Kingston HyperX = Games Crashing!

I recently purchased some new high performance laptop memory and a new harddrive for my laptop and I was having problems with them! I was wondering if someone could help me figure out what the problem is. I purchased new 2X2GB 1333MHz DDR3 Kingston HyperX CL7 (7-7-7-21) memory for my Alienware M15x laptop (Core i7-720qm/Nvidia 260M) and a new 500GB 7200rpm Hitachi hard drive. Everything was fine at first, but then I noticed that my games started crashing straight to desktop like a half hour into playing them (batman/bf2142/bf2). Searching the problem through google, I think it is very likely the RAM being the problem. It can't be heat because my Video Card stays around 65-75C when gaming. So I ran Memtest86+ using a USB and it told me I had no errors at all, so I don't really know what to do right now. I have some pictures of my BIOS and CPU-Z here if they help.

http://img51.imageshack.us/img51/9894/ramtimings.jpg
http://img94.imageshack.us/img94/844/photo2e.jpg
http://img696.imageshack.us/img696/3170/photo3b.jpg

The last picture is what I think I should do, but I don't really want to mess around with settings yet because I don't know what is really going on.

Change the Command Rate from 1T to 2T, and change the DDR3 Voltage from 1.5V to 1.6 - 1.7V (HyperX DDR3-1333MHz RAM scales anywhere from 1.6 - 1.7V, depending on the exact model). You might also want to change the CPU Performance Mode from Turbo to a less aggressive setting.