Black monitor,with gtx 980ti and acerx240habpr

[Monis1133]

Hi all,i have problem with grx980 ti Asus and monitor acerxb240,after turning on the pc of the bios after which the screen goes black screen with the word no signal . usually just changed again , and this time the door did not work . Think is a problem related to frequency .thank you in advance

 

[Monis1133]

Now i use multiple monitor acer run but when i re turn single monitor say no signal

 

[Monis1133]

1 to connect another screen
2 to open the screen by setting the video card panel ( in my case nvidia setting )
3 to change the frequency from 144 to 60
4 also reactivate acer -mode no signal
5 put acer as your primary display
6 disconnect the other screen