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i am having trouble with the launcher thinking i am running 32 bit and not 64 bit i need 1.5 or 2 gb of ram or memory to play one of my favorite modpack and i have 4 gigs but the thing is when i go to select the option to up the memory usage for the game it shows the options for a 32 bit which is significantly less as in it has 1 gb and below so i was wondering if someone could help me on this

Name:Ryan Fitzpatrick Minecraft Username:ryfitz64 Age:13 Preffered Tekkit Mod: CompterCraft Are you banned in any server(Y/N):N