Comments

1. Seahorse Said,

   The fonts affected are the following:
   Tahoma
   Courier New
   Verdana
   Arial
   Arial Narrow
   Arial Bold
   Lucida Console
   Trebuched MS
   Times New Roman
   Marlett

   (note: this list may or may not be entirely complete)

   The reason your fonts get bold/italic is that your normal versions of these fonts has been corrupted in (well, deleted from) the registry and Windows automatically falls back to the closest in the same family, if any, and therefore your text goes bold or italic – since these weren't effected.

   To fix this, you will have to either restore your Windows to a prior state before uninstalling Left 4 Dead, or manually restore your register.

   To restore your register you can do the following:
   Note: editing the registry is highly risky and may lead to a corrupt/non-functional system. Do this at your own risk.

   1. Click "Start" and then "Run"
   2. Type regedit.exe and press Run/OK
   3. First of all, backup your current registry by going to File -> Export and save it to a safe place, preferably an external thumb drive or something accessible.
   4. Navigate through the folder tree to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Wi… NT\CurrentVersion\Fonts
   5. Here, you'll need to add a string variable for each font in the list above with the correct font-file in your C:\Windows\Fonts folder. If the variable already exists, check that the filename is correct. An example is the following (in string name -> value):

   Tahoma (TrueType) -> tahoma.ttf
   Courier New (TrueType) -> cour.ttf
   Verdana (TrueType) -> verdana.ttf
   Arial (TrueType) -> arial.ttf
   Arial Narrow (TrueType) -> arialn.ttf
   Arial Bold (TrueType) -> arialbd.ttf
   Lucida Console (TrueType) -> lucon.ttf
   Trebuched MS (TrueType) -> trebuc.ttf
   Times New Roman (TrueType) -> times.ttf
   Marlett (TrueType) -> marlett.ttf

   6. Exit the register editor and reboot your computer to be sure that the changes has been made. You should now have your normal fonts back.

   You wont even need to go to the registry, once you re-install the fonts it does it for you.