Tap on the Windows-key, type cmd and hit enter.
Type powershell and hit enter.
Use the command get-hotfix -id KB3035583 to find out whether the update is installed
To speed things up, query for all updates in a single command like this:
get-hotfix -id KB3035583,KB2952664,KB2976978,KB2977759,KB3021917,KB3044374,KB2990214,KB3022345,KB3075249,KB3060746,KB3080149,KB3068708,KB3083324,KB2999226,KB3083710,KB3095649,KB3102810,KB3112343,KB3135445,KB3118401,KB3121255,KB3138612,KB3139929,KB3133977,KB3123862
Use the command wusa /uninstall /kb:xxxxxxx to uninstall a patch (replace xxxxxxx with patch number)
these are all the updates i have blocked so far.
this list is always being updated here..
http://www.overclock.net/t/1568075/psa-how-to-remove-windows-10-nagware-from-windows-7/0_40