Problem When Installing Windows 8.1 Pro. x64

Hi Guys
Firstly This is my Computer Proprieties

Os : Windows 8.1 Pro x32
CPU : Intel Pentium 4 Support x64 systems
Ram : 2 Gb
HardDisk : C: partition : 103 Gb
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The Problem
when enter windows 8.1 pro x64 dvd and boot from it
it just loading and open black screen then restart and start the current windows (8.1 pro x32)
so i try to setup from setup file on dvd from working windows
and get this message

Please Help me i tried to search google and found no thing
This another screenshot from securAble Program
(it's seems i can install windows x64):huh:

you have 2GB memory - install x86 OS, not x64