You mean your minecraft doesn't start with 64bit Java?
Sry, *facepalm*
Download it to .minecraft: *illegal content removed*
Create a .bat file and write with notepad inside:
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javaw -Xmx2048M -XX:+AggressiveOpts -cp %appdata%\.minecraft\MinecraftSP.jar net.minecraft.LauncherFrame EXIT
It's for cracked minecraft. When you use premium then PM me, I will send you another start code.
(lol, I bought Minecraft but still use that Launcher <3)