Installed memory ram 4 0gb 2 0gb usable

Windows 7 Starter doesn't support more than 2GB of memory. The only way you can use all 4GB is to upgrade to a different version of Windows. Even then, Windows will reserve some for system functions, so you'll see something like 4.00GB (3.75GB usable).

This is directly from Microsoft:

Physical Memory Limits: Windows 7
The following table specifies the limits on physical memory for Windows 7.

Windows 7 Ultimate
4 GB - x86
192 GB - x64
Windows 7 Enterprise
4 GB - x86
192 GB - x64
Windows 7 Professional
4 GB - x86
192 GB - x64
Windows 7 Home Premium
4 GB - x86
16 GB - x64
Windows 7 Home Basic
4 GB - x86
8 GB - x64
Windows 7 Starter
2 GB - x86
N/A - x64

Starter edition only allows 2GB of RAM maximum.

Windows 7 Starter should have been aborted at birth, take the hit and upgrade to Windows 7 Home Premium x64.

thanks for the info...

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