Black screen on startup

doesnt work, uninstalled pico steaming service and tried uninstalling ow2 and installing it again. still the same black screen but i fixed it by pressing window key + shift + s to go to screenshot mode and i can see the screen that way but only briefly and i managed to go to settings and changed the display mode from fullscreen to windowed by changing any settings and pressing delete key to revert changes to default and i can see the game like normal now