I got this error when I used Debug:
'SFML.exe': Loaded 'C:\Users\Martin\Documents\SFML\Debug\SFML.exe', Symbols loaded.
'SFML.exe': Loaded 'C:\Windows\SysWOW64\ntdll.dll', Cannot find or open the PDB file
'SFML.exe': Loaded 'C:\Windows\SysWOW64\kernel32.dll', Cannot find or open the PDB file
'SFML.exe': Loaded 'C:\Windows\SysWOW64\KernelBase.dll', Cannot find or open the PDB file
'SFML.exe': Loaded 'C:\Program Files\AVAST Software\Avast\aswhookx.dll', Cannot find or open the PDB file
'SFML.exe': Loaded 'C:\Users\Martin\Documents\SFML\SFML\sfml-graphics-d-2.dll', Cannot find or open the PDB file
'SFML.exe': Loaded 'C:\Users\Martin\Documents\SFML\SFML\sfml-window-d-2.dll', Cannot find or open the PDB file
'SFML.exe': Loaded 'C:\Windows\SysWOW64\gdi32.dll', Cannot find or open the PDB file
'SFML.exe': Loaded 'C:\Windows\SysWOW64\user32.dll', Cannot find or open the PDB file
'SFML.exe': Loaded 'C:\Users\Martin\Documents\SFML\SFML\sfml-system-d-2.dll', Cannot find or open the PDB file
'SFML.exe': Loaded 'C:\Windows\SysWOW64\msvcp100d.dll', Symbols loaded.
'SFML.exe': Loaded 'C:\Windows\SysWOW64\msvcr100d.dll', Symbols loaded.
The program '[7176] SFML.exe: Native' has exited with code -1073741701 (0xc000007b).