I hope this is an appropriate forum for asking this. I was following method #2 of this guide ( http://www.wikihow.com/Customize-the-Size-of-the-Windows-7-Taskbar-Icons ) and I made a mistake in the registry key that it suggested. I didn't read closely enough, and rather than creating a new key called "MinWidth", I edited the "AppliedDPI" registry key (it appears to be the one selected in the screenshot). Dumb mistake that could have been avoided, but now I need to fix it.
This really messed with the sizes of text and other GUI elements (the minimize, restore down, and close icons in the upper right portion of windows are HUGE), and changing it back to the default value (96) does not do anything. I didn't change any other registry settings. Is there some way to fix this that I am not realizing? The computer is practically unusable now unless I change to a different user.