right click / new / context menu missing / win xp sp3

hello, i am using windows xp sp3.

from yesterday, when i right click, and choose new, only new folder and shorcut are my options, all others are missing, like office files, paint, and other programs.

what should i do?

i tried: to create here: HKEY_CLASSES_ROOT\Directory\Background\shellex\ContextMenuHandlers\ a new folder with value {D969A300-E7FF-11d0-A93B-00A0C90F2719} ,

i tried using recreate new regedit,

i tried to .. restore my computer to how it was 2 days ago, and the problem persisted.

also i used some programs to select which option to see at right click/new - and all needed were enabled..