Windows 7 Problem with RAM

[taryar]

I installed win7 professional on lenovo y430. Before win7, i use vista home premium. My laptop has 4GB DDR3. After installing win7 i checked the system properties. It showed me like that " Installed memory(RAM): 4GB(2.99 GB usable).
What's wrong with my laptop? System type is 32 bit.

 

[epk1950]

Dunno yet, but we are discussing about this problem at the post if you like to take a peek.

http://windows7forums.com/windows-7-hardware/23273-ram-shown-system-properties.html