I manually installed dnn on inetpub/wwwroot but after dnn installed itself, I kept getting error report can't find login.aspx.

I later tried installing dnn using the WPI auto install, it did installed but I had to install IIS 8 express along with it. Now I have IIS7 installed at root and that's what I see under add/remove windows feature

my auto installed dnn was installed to user/mywebsites and uses the IIS8 express *which was also installed at that location I think. Using the auto installation, I was able to login to DNN. On returning, I had a memory dump. After memory check and restarting the system my browser can no longer connect to localhost:8080 i.e IIS8 express neither localhost:40731 which it allocated to my dnn. 

Any help?