Cant open My photoshop document directely

I am using Photoshop CS6 and I am facing a problem in that.

when I open Photoshop Application it opens in 64 bits but when I open the PSD file it cant open in the Document directly.

I have to First open photoshop and then the PSD file and its very boring sometime to open first photoshop and then my psd file.

Why I cant open my psd file directly please help.

Thankyou.