After reinstalling ram black display

[rytuliux911]

Yesterday i've changed ram from 4gb to 8gb on my asus x553s.
After change all works, but blinking battery light in green color, and display wont start. When i pluged pc on external monitor it show the view.
Any ideas how to start laptop display?

 

[tapak]

Reset the CMOS

 

[rytuliux911]

I cant find where is cmos battery to do that..