Question Laptop keyboard not working, after opening it and cleaning dust

[Rokasro]

After opening the laptop, unscrewing the top, to clean dust and then putting the top back on, keyboard doesnt work anymore, please help.

Added pictures, can someone guide me what to do, to make the keyboard work again?

https://imgur.com/a/ncSVvY9

View: http://imgur.com/gallery/ncSVvY9

 

[Lutfij]

Welcome to the forums, newcomer!

Did you reassemble the laptop in the reverse order of how you opened the laptop? If so, you should be able to reconnect the ribbon cables to the motherboard to regain it's functionality. On another note, did you try cleaning the keyboard's underside as well as all the keys? Can you elaborate on what you're seeing in terms of a keyboard not working? one key not working or that the entire keyboard isn't found n Device manager?