Windows – Prevent Windows Key from Opening Start Menu in Windows 7

It looks like ActiveHotkeys might be what you want:

On several occasions there have been requests for a program that displays what global keyboard shortcuts are registered by various applications. ActiveHotkeys does just that: it will show a list of all active (registered) or inactive (available) global hotkeys.

Updated to version 1.1 - the Play/Pause edition. Totally free for all; please let me know if you encounter a problem. No installation necessary - just unpack and run. See the included readme file for details (or click the About tab in the program).

Download links are at the bottom of this post. Please be sure to download the latest version.

Please note that Windows does not allow for detecting which application has registered a particular shortcut, so that feaure is not included. (If you think you know how to achieve that, using message hooks or what-not, please post here or earn some karma at StackOverflow)

For the standard shortcuts, refer to this list and setup a hotkey instance to override it. For example, I made an ALT & F4 hotkey, which would normally close the active window, and made it enter some text instead. It works:

ALT & F4::
Send foobar ; This line sends keystrokes to the active (foremost) window.
return

That only fixes each instance. To disable a key (ALT) by itself use:

ALT::Return

For more on that see this.

Watch out for other key combinations made possible by installed software/reg edits such as this video card instance.