Windows 10: Windows: Alt Tabbing on Its Own and Double Copy/Paste

I've gotten a new keyboard AND mouse from a separate company and reformatted my PC. I'm ASSUMING the latest windows update causes my computer to Tab out without entry and double copy/paste. Prior to all the updates after the reformat, I had no problems. Now I don't know how to stop it. Help would be appreciated.

:)

 

alt + tab not working

Just found a really cool way to make alt+tab INSTANT!!!

In the launch options write the following: -windowed -noborder





This play exactly the same as fullscreen but now you dont have to wait 30 f*@!ing seconds to alt+tab back in!

Also you don't get the little purple/black checkered effect (only in Source games) from alt+tabbing in fullscreen.

 

alt + tab not working

i always just use the windows key to get back to the desktop [pops up the start dealy, doesn't need anything to alt+tab to]

 

Forced to do "ALT-TAB-TAB" to switch instead of "ALT-TAB", when two Excel files are opened.

Normal version:

You hold ALT, then press TAB once, but keep ALT held. A window will appear with small windows of all opened programs and the next program on the list (the one you used before the current one) will be automatically marked. Once you release ALT, you will be
switched to the marked program.

Hitting ALT+TAB quickly would allow for quick rotation between two programs.

NEW version for EXCEL (working whenever TWO Excel files are opened):

Now I wanted to do exactly that: copy data from Excel file A, ALT-TAB to file B and paste it.

With dismay I realized that some bonus feature was implemented now.

So now you hold ALT, then press TAB once with ALT being held. This time you no longer get switched to the last active program. No - your CURRENT program is marked. If you release the ALT button, you will simply stay in the current Excel file. Now I have
to ALT-TAB and TAB again to get to the other Excel file.

What is heck? How can I eliminate this "feature" and flush it down the toilet? Double-tabbing thousands of times will definitely drive me completely nuts, so please help me out on that.