This guide is to solve the graphic configuration problem and the full screen does not appear
How to Fix Fullscreen Issue
1 C:\Users\\AppData\Local\Back4Blood\Steam\Saved\Config\WindowsNoEditor
-If “AppData” does not appear, go to view and click on “Hidden Elements”
2 _Open “GameUserSettings.ini” with “Notepad”
3 _Go where it says:
FullscreenMode
LastConfirmedFullscreenMode
PreferredFullscreenMode
4 _Change the values of these to 0.
5 _Finally where it says:
ResolutionSizeX =
ResolutionSizeY =
Change the values to the resolution you want or it is better for you, in my case it would be:
ResolutionSizeX = 1280
ResolutionSizeY = 720
By Ryu