New pc problems

I built a new PC, but having problems with installing certain games like Vindictus, CIV5 and Star Craft II, not to mention my Champions Online gameclient.exe keeps crashing. I see BSD typically targeting memory_management, half the time and something else the rest. AIDA64 shows no hardware problems, but I'm not sure. Can someone steer my in the right direction? I'm using WIN7, all updates installed.

 

Memory management errors are a strong sign that you have a ram problem. I'd strongly suggest you check your ram using Memtest86+.

 

I used MEMtest86+ and got a miserable report card. So I looked at the manual for the Motherboard, which I didn't have prior to purchasing my RAM, and found out that my DDR2/800 2 GB sticks were too great! So I bought two new 1GB sticks and all is well in the world, I'll go out and get two more sticks later or a get a better MB.

Thank you for the assistant, I blame my novice mistake of my management job ... need to keep up on the tech knowledge as well as the focus on network/system.