My window updates in the history box(clicking on yellow star) disappeared. Its not showing my updates since past 2 weeks. How can I fix it? I have windows 7.

Micorsoft releases updates on a monthly cycle on the second Tuesday of each month.
It is known as Patch Tuesday.

I checked it but it is showing only few of them. Youtube and Google isn't appearing. All it shows is Computer and MSN. I don't know what I can do. When I bought the laptop it was working but after a couple of weeks it disappeared.