how to start update selection window?

Hello,

How can I open update window, if the yellow balloon doesn't appear to the
right corner of taskbar?
If it's possible to start form command prompt, how is it's name, with update
selection window?

When I shut down Windows there is an notice to install updates now but if I
choose it there without option of selection, there are also installed
updates which avoid my other applications to start. So I must later manually
always uninstall the undesired ones.

Thanks,
John