Take the 2-minute tour ×  I have absolutely no idea what is
causing this.  I have a Windows 7 Professional box, and
sometimes (I don't know under which circumstances), hitting
ctrl-c (for example, to copy something into the clipboard)
initiates an immediate system shutdown. All running applications
immediately close (even faster than if I had started a shutdown
from the start menu), and the system shuts down.  I've been able
to abort this with some apps like PuTTY that refuse to close
unless I confirm that I do want to close them. Hitting "no"
successfully aborts the system shutdown, but not before having
closed a dozen or more other applications I was working on.  I
suppose this is not default behavior (although I'm not sure if
this happens when the desktop is the focused window). I have
checked for viruses with an up-to-date antivirus, and same for
spyware. I am an IT professional, so I think I know what I'm
doing.  Maybe this is being caused by some software. Does
anybody know of any software that does thi