Cannot Right Click Anywhere In The Computer

1. cannot right click anywhere in the computer.

2. active windows have the menu options underlined so that when i attempt to use the shift or control keys, a menu action is the result, rather then then the normal typing function that i am attempting to exicute.

3. active windows do not appear on top

4. windows media player will not show the video window, only the playlists. it does play the file, but i cannot see the video. now, i could see the video if i left the window small and the window is not the active window now all these happen after i reboot or turn the computer off and on again. the problems seem to resolve themselves after about 10 days. but that is awful and i hate it. i have maxpc cleaner and stopzilla protection. i had not downloaded any software, i did use the restore point right after the first instance (which was three months ago). now i did spill beer on my key board and was forced to get a wireless one. Logitech k250. if that is the cause, is there a solution without buying a new keyboard.