Harmony Remotes

[bucho]

Hi,  I use my 520 to control Windows Media Center on a PC.   When I press the power button on the remote, it turns off all my devices, but also puts my PC into standby mode. What's frustrating about this is when I go back to that activity, it now prompts for a password, and I have to grab  a keyboard and type it in.  I don't want the computer to go into standby mode, anybody know how to adjust this?