Try system restore to a date before you installed the game your referring to.
Start - In the Search Area type - restore - at the top click - system restore.
I am running Windows 7 Home Premium and just recently my computer began having issues with font sizes in certain programs. The large font only applies to windows that look like this and use this font - http://i.imgur.com/xuHlA.jpg. Note that the text runs out of the boundaries of the field, cutting off letters.
This happened after reinstalling an old game, Baldur's Gate 2 if it matters. In an attempt to fix the issue I uninstalled the game only to find the the font issue persisted. It appears to be only that it is only the one font that is having the size issue.
Thanks in advance for any help.