4GB Ram Installed But 3.5GB Usable???

Hi everyone 4-5 Months ago i installed 4GB Ram THAT IS : 1x1x1x1GB and yes my OS is Windows 7 Ultimate x64 Bit please tell me what is the problem i'll post my specs using CPU-Z Image by Image ok? So Please please please tell me the problem everything is running so slow and whatever :bounce:

>CPU http://i.imgur.com/iLjxJ.jpg?1
>Memory http://i.imgur.com/73mHX.jpg?1
-> SPD Slot #1 http://i.imgur.com/RzrDu.jpg?1
-> SPD Slot #2 http://i.imgur.com/y0Z33.jpg?1
-> SPD Slot #3 http://i.imgur.com/QCiIq.jpg?1
-> SPD Slot #4 http://i.imgur.com/JKo01.jpg?1

Now look what the Windows Properties are showing
4 answers Last reply
More about installed usable
  1. BUMP!!!!!!!!!!
  2. BUMP!!!!!!!!!!
  3. if you still bumping your post nobody will answer ,this is a laptop and the graphic card use a part of the total memory of the system check you system specs
  4. scout_03 said:
    if you still bumping your post nobody will answer ,this is a laptop and the graphic card use a part of the total memory of the system check you system specs

    Well thanks cuz your the only one helping :(
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