Depending on the nature of the information that you want to find, there are three very easy ways to find out your computer's hardware details. Let's examine each one.
Method 1: Directly from 'My Computer's properties section.
Right-click on My Computer, and select the Properties option from the menu. On the window that appears, you can see some basic technical details about your computer.
Method 2: Through Windows Experience index
This is another easy method. In the Properties section of My Computer (which you brought up in the previous method), you can see a blue link with the words 'Windows Experience Index'. By clickingon it and following the steps you find, you can make Windows itself test your computer and rate it's various components on a scale of 1-7.9 . Based on these scores, your computer will also be given an overall score.
Method 3: Through the DirectX diagnosis tool