Usually, you will get this Windows 10 screen doesn’t fit monitor issue when upgrading to Windows 10 or connecting your computer to another computer. This case indicates that you encounter the screen doesn’t fit monitor Windows 10 issue. When you are watching videos with either smaller or larger text, your computer turns black in a sudden. Windows 10 screen suddenly gets strange now. Possible Causes for Windows 10 Screen Doesn’t Fit Monitor Solution 3: Update Display Adapter Driver.Solution 1: Adjust Windows 10 Screen Resolution.Possible Causes for Windows 10 Screen Doesn’t Fit Monitor.