I got a problem in KMPlayer, which it is showing videos only in the top left corner of the screen even in full screen. I tried reinstalling, but the problem wasn’t solved. I searched for a solution and found this.

Follow this instruction so as to preview “Advance Video Option” in your list
Right Click on the Kmplayer screen –> Go to “option” –> Select “Advance Menu”

then follow these steps:Start a movie then on the movie in kmplayer press right mouse button, then go to”Video(Advanced)/ Video renderer/ ..and choose video renderer as vmr9 renderless or Vmr widowed

Solved the issue….

Hope it helps someone…. 🙂