Sony PCG-FRV28 - Manual (Page 118)

Confirming Added Memory Capacity
After you've installed a new memory module, make sure the operating system recognizes it.
To check your system's memory
1. Turn on or restart the computer.
2. Click Start on the Windows ® taskbar, and click Control Panel.
3. Click Performance and Maintenance, and click System. The System Properties window appears.
4. On the General tab, you can view the amount of system memory.
System Properties Window
5. If the additional memory is not shown, remove and reinstall the memory module.
The displayed memory may be less than the installed memory due to the amount used by the display adapter.
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