I tried searching the net about similar problem but i had little to no luck. it might be me lacking the correct keyword or something like it.
my Intel graphic is HD4000
As you all expert know w8.1 have this option on the right bar
from there if expect a search if i press project but it doesn't happen ! (this cause me unable to add any new monitor via wifi to my device)
after struggling to find the cause, i found out i have https://i.imgur.com/LHS0Irc.jpghttp://imgur.com/LHS0Irc  these problem, it seems windows think i'm connected to some monitor while in reality it just connect to my own graphic driver (no option to remove either).
is there somebody that can help me so windows won't think intel built in display is somehow already connected ? if possible i want to remove it altogether
To remove that second display, please click on the screen(on the small square indicating the display) you don't want to see and click on Multiple display and choose Remove this display, check the picture below;
Please notice that this issue is completely related to Windows, as you can notice that is the Windows Screen Resolution option, it's not related with the Intel driver.