I have 8gb of ram installed and it says only 3.49gb is useable

[KuroOuji]

i built this gaming pc yesterday and istalled the windows and everything , but when i took a look at the computer properties i noticed that the RAM is underused , i have 8gb ram (2x4gb Corsair XMS3 ddr3) it only say that 3.49gb of RAM is useable
as in the pic bellow , so why did that happen ? and how to fix it ?
please reply me as soon as possible .

 

[lafontma]

You are running a 32bit OS according to the screenshot. You need a 64bit OS to take advantage of any amount of memory above 4GB

 

[unksol]

As he said. There's almost no reason to use 32bit anyway. Start over and install the 64bit version.

 

[unksol]

If you did not receive a 64bit disk download the correct official iso from here

www.mydigitallife.info/official-windows-7-sp1-iso-from-digital-river/

And install using your license key. Your license covers either version.

 

[Shockeray]

I didn't know you could upgrade, I have been using 32 bit for two years now and wondered, thanks for the info unskol

 

[KuroOuji]

Best answer selected by KuroOuji.