My nikon d40 is not showing live screen view nor i

I realize these aren't the answers you wanted to see, but the D40 does not have any live view capability, nor does it shoot video. Nikon intended the D40 as an entry-level dSLR, with a minimal feature set. In fact, they didn't introduce the video until the D90, introduced more than two years after the D40. The least-expensive Nikon dSLR with both of these capabilities is the D5000.