GZDoom doesn't start in fullscreen

[WatermelonPL]

Hey, I plugged external an monitor, to a laptop (LG Flatron L1717S 1280x1024@75Hz), and when trying to start in fullscreen, the monitor goes black and displays "Out of range" with kHz/Hz. It doesn't work with every resolution (other than 320x240)

Edited December 18, 2018 by WatermelonPL : Grammar

[snapshot]

delete .ini file, set the appropriate screen resolution, then go fullscreen.

[WatermelonPL]

6 hours ago, tempdecal.wad said:

delete .ini file, set the appropriate screen resolution, then go fullscreen.

Tried

EDIT: It worked yesterday, but I forgot to type

Edited December 18, 2018 by WatermelonPL