I've read the thread. And the troubleshooting guide. And the read me. I've done everything suggested, from compatibility settings to clean booting.
Today I reformatted my disk and reinstalled Windows 7. I instealled Steam. I downloaded Deus Ex: HR. I downloaded the trainer. There is nothing else on my system at all.
The trainer still doesn't work. I hear "trainer activated" when I press F1 at the main menu. When I load a save and press any key on my numeric keypad, I hear "activated." None of the keys have any effect on the game whatsoever.
Please help me with something more than a paste of your tech support articles.
The only thing I can think of on a fresh install from a genuine Windows is that your Num Lock key is not enabled (some keyboards have it disabled by default)
[Edited by moderator Neo7, 8/31/2011 5:37:31 PM]