Hello Black Mesa team and fans.
When I went to play Black Mesa I changed the resolution of the screen to the last option, but my screen doesn’t support that resolution.
How I could change the screen resolution without run Black Mesa?
I tried delete the BMS folder in source mods and install Black Mesa again but doesn’ work.
I am waiting for your answers.
Thanks.
P.D.: Sorry if my English is bad.
right click on “black mesa” in steam library then go to “set launch options”
and you should write something like this:
-width 800 -height 600where 800 and 600 are your desired width and height, then apply and launch the game 
lower the resolution in black mesa to what monitor can support, if your not sure what that is right click on your desktop and check the personalised options then adjust black mesa to the same.
also get a new monitor, im tipping yours is prehistoric if it cant support the 1920 x 1080p
It works. Thanks for your quick reply
Popular widescreen resolutions are 1280x800 and 1440x900
Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valve’s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.