can't upload files from computer in any wysiwyg editor When I want to upload an image from an editor it only allows me to insert a URL and the ability to browse and upload a file is missing. 
So there's something that behind all the wysiwyg editor that is preventing me from doing this and honestly don't know where to start looking for this.

Tried FCKeditor, CKeditor, jwysywig and TinyMCE and in all those cases I can only insert a URL but not upload from hard drive

There's a tutorial I found on youtube here. At 0:19 you'll see 4 tabs called 'Image Info', 'Links', 'Upload' and 'Advanced' respectively. 
So my problem is the 'Upload' tab is missing from my editor as well as all other editor where this upload function is supposed to be.
The IMCE project provides upload capabilities to a variety of WYSIWYG editors. Check the project page for the appropriate way to install it for your particular editor.