A couple of months ago, I had a good installation of the raspberry pi, and the picam module I was using was working great. Recently, one of my raspi's drivers got corrupted, so I had to re-install the OS. After I finished setting up the picam, I tried to preview it, but nothing came up on my screen. (I am using SSH,VNC, and Camera) but i'm trying to preview from the raspi. (no remote connection) However, when I run the command, the red light on my picam turns on for a second, but nothing pops up on screen. I am going to do an april fools prank involving motion detection, so I need to fix this ASAP. Thanks!