X2050

Whenever I try to run the suggest mods on the modpack page on the launcher, a box comes up saying that it can't run because I'm only using 1 ram instead of two, and then it says that it can't tell if I'm running a 32-bit or 64-bit of Java. I have the latest download of Java (installed the latest version as soon as I got this error), and I completely reset my computer a while ago and have barely downloaded anything. An immediate solution would be greatly appreciated