After the last big update for Windows 10 (the anniversary one) I started having a problem with contextual menus (all right click windows except the ones on the task bar) an in general potion windows, program windows etc.
In general what happens is that you can se the outline of the menus/windows and if you know where exactly to click they do work, the problem is that some times it takes time to show up, or you have to move the window around to show up, or move the cursor over it a bit to show up, or in some cases it just freezes and shows perpetually the background. Programs them self run OK it aperas to be just the contextual menus.
A couple of examples of what is happening, for instance on chrome you can enter pages with no problem everything displays correctly, but if you right click the contextual menu only shows the outline of the box. On task manager closing or disabling thinks works but take some time to show as done on the window.
From what I've seen the problem seems to be consisten in that every start up it happens and the same thing happens to the same programs/windows/menus.
I already try disabling Contextual Mues Handlers either by regedit or ShellExView, also disabling through task manager all start up programs, run on command prompt scannow, running antiviruses and malaware scanns, all on admin privileges and with restarts and it hasn't work.
I did found a way of fixing it after start up which is a bit strange, if I run a game (not all do, only a couple of the once I have, haven't look on details about the reason for why some do work and some don't) and then exit it the whole thing now works properly until the next restart.
Since at least I know a work around at the moment it is workable but the whole thing is a bit strange to me and it's mildly annoying to have to start a game on each start up to get Windows to behave as it should, so if anyone has any suggestions they are more than welcome.