There are many many ways of disabling the Ease of Access Button from the Logon Screen and I won't go into posting links to sites with all those applications that disable it but give you a message if you click it. I have to successful ways of dealing with the button, Disable it where its pretty much useless or a way that I came up with to completely remove it from the screen ( yes thats right, no matter what everyone says you can remove it).
First we'll disable it
Goto Start Menu - Run - CMD and click OK. If you can't run a Command Prompt, goto
Start Menu - All Programs - Accessories and Right-Click Command Prompt and Run as Administrator. Type or paste the following code into the Command Window
cacls %windir%\system32\utilman.exe /C /D Everyone and hit Enter
You will be prompted with a Y/N just type yes and hit Enter and close the Command Prompt
To enable it back open your Command Prompt and Type or Paste the following code into it hit Enter
cacls %windir%system32\utilman.exe /E /G "Everyone":R
The next option is to Remove the Button from the Logon Screen Completely and will require a little understanding of editing a dll file. goto
My Computer\C:\Windows\System32 and locate the file Authui.dll .First Right-Click and make a copy and place it in a secure place in case you change your mind. Open the dll in a resurce editor ( I use PE Explorer which can be found here http://www.heaventools.com/ ). Locate the folder UIFILE and in this folder you will see 4 files, 3 xaml files and 1 textfile. We will be editing the 3 xaml files. Double-Click the file named 12400 and scroll down till you come across the following code
delete everything following that code which will be 46 lines of code till you reach
stop at the line above that. Click save and open the next 2 files 12401 and 12402
Optionally you can edit the first one Right-Click Select all and copy, click save and open the other 2 Right-Click Select all and paste. These 3 files are identical. Save all 3 and Save changes to the file. Logoff and wala nomore Ease of Access Button
Screenshot of my Laptop without the Button
You can also download the authui.dll file I edited to do this without you having to here: http://www.megaupload.com/?d=7E7UXBE9