How to setup Linksys E900 as a bridge?

[TerrorBlade]

Hi, I have a TP Link Archer C7 1750.
It's not able to cover my entire house because there are too many walls.

I have an E900 lying around.
Can anyone share a link or explain the steps to set this up a bridge to boost the Wi-Fi signal?

 

[Ranjith Sai]

For anyone else looking for a solution please refer the below link.
http://ebenjie.blogspot.in/2014/04/making-repeater-with-ciscolinksys-e900.html

PS: Do this only if you are aware of the risks of installing DD-WRT.