There are several ways to obtain your computer's hardware and software configuration (see below). In addition, Device Manager provides details about peripheral devices and drivers (see Win Device Manager), and you can find out just how fast your Windows Vista, 7 or 8 computer really is (see Windows Experience Index).
To view basic information about the OS, CPU, disk and memory, select the System control panel.
System Information reports excruciating details about everything.
Select Start menu and type System Information.
Windows 8 Tablet
1. Select Performance control panel.
2. Tap Advanced tools.
3. Tap View Advanced system details in System Information.
Windows XP, Vista and 7
1. Click Start Menu/All Programs/Accessories.
2. Select System Tools/System Information.