You need to go into each product and turn off any option for automatic updates.
For example if you go into Windows Update there will be an option saying "Change Settings" and if you go in there you get an option "Never check for updates".
If you set this on then Windows will never check for updates, though it will be a good idea to manually install these updates on a regular basis for security reasons.
You also need to go into the Toshiba program (it will be on the main Windows menu somewhere) and go into somethiong like "Options" or "Settings" (or similar) and turn off any automatic updating.
You may be able to change the Toshiba program so it does not start when the computer starts.
Adobe have a number of products (Reader, Flash, Shockwave) and turning off automatic updates for those may require a bit more work. Often Shockwave and Flash auto update and I am not sure how you turn that off.
If you open up Adobe Reader, then go into Preferences, then Updater, there is an option to NOT check for updates.
Basically you need to go into each program individually and turn off automatic updates. How to do this will vary between each program.