4gb (3.5gb usable) !! why ? and how to fix ??? Tech Support

4gb (3.5gb usable) !! why ? and how to fix ???

Hey , i just upgraded my RAM from 2GB to 4GB !! 
 
and now in System spesifciations , it says this : Installed memory (RAM) : 4.00 GB (3.50 GB usable) 
 
why is this happening ? and how to fix this ??
 
PC specs :
OS:
Windows 7 Ultimate x32 , Service Pack 1
Motherboard :
SMBios version 2.4
Gigabyte Technology Co., Ltd.
X38-DS4
Bios: Award Software International, Inc.
F1 11/23/2007 taille: 1024Kb
Processor :
Intel Core 2 Quad Q6600 Kentsfield Socket 775 LGA (@65 nm) 2400 Mhz ( L1I: 4 x 32 Ko, L1D: 4 x 32 Ko, L2: 2 x 4096 Ko )
Memory :
Physical memory size: 4096 Mo, Type: DDR2, @400.0MHz, 6.0-6-6-18-2T
DDR2 Samsung M3 78T5663QZ3-CF7 2048 Mo PC2-6400 (400 Mhz) (6.0-6-6-18)
DDR2 Samsung M3 78T5663QZ3-CF7 2048 Mo PC2-6400 (400 Mhz) (6.0-6-6-18)
Graphics card :
ATI Radeon HD 3800 Series (RV670,,512 Mo)

Solutions to the Problem 4gb (3.5gb usable) !! why ? and how to fix ???

Download SmartPCFixer to Fix It (Free)

Install a 64-bit operating system.
Make sure you have a stand-alone video card (or at least one with its own memory.)

Tweak IE Options

• Open Internet Explorer.
• Go to "Tools > Internet Options > Advanced Tab".
• Uncheck "Enable third-party browser extensions".
• Click "Apply".
  
• Reboot your computer.

Recommended Method to Fix the Problem: 4gb (3.5gb usable) !! why ? and how to fix ???:

 

 

How to Fix 4gb (3.5gb usable) !! why ? and how to fix ??? with SmartPCFixer?

1. You can Download SmartPCFixer here. Install it on your computer. When you open SmartPCFixer, it will perform a scan.

2. After the scan is done, you can see the errors and problems need to be fixed. Click Fix All.

3. The Fixing part is finished, the speed of your computer will be much higher than before and the errors have been removed.

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