I want to install dotnetnuk, and I did all what the 4 videos for installing dotNetNuke said.... but I still am getting this damn error:

HTTP Error 500.21 - Internal Server Error Handler "PageHandlerFactory-Integrated" has a bad module "ManagedPipelineHandler" in its module list

Module IIS Web Core

Notification ExecuteRequestHandler

Handler PageHandlerFactory-Integrated

Error Code 0x8007000d

Requested URL http://www.dnndev.me:80/default.aspx

Physical Path C:\websites\dnndev.me\default.aspx

Logon Method Anonymous

Logon User Anonymous

Most likely causes: 1. Managed handler is used; however, ASP.NET is not installed or is not installed completely. 2. There is a typographical error in the configuration for the handler module list.

Things you can try: 1. Install ASP.NET if you are using managed handler. 2. Ensure that the handler module's name is specified correctly. Module names are case-sensitive and use the format modules="StaticFileModule,DefaultDocumentModule,DirectoryListingModule".

THing that I did for installing DotNetNUke: I installed iis 7.5 (i also tried 8.0 but didn't worked, too). I checked (because it was unchecked) IIS at Turn Windows Features on or off, i also selected the feature ASP.NET (whre other features where selected automatically) also I selected windows authentication.

Afte that I googled and found about aspnet_regiis.exe, and I executed it too, but it also didn't worked :(.

I have no idea what to do now!! I really need to install dotnetnuke, but I can't install it on my laptop :(

Please help me someone!