Know full details of your computer

1. Start Command Prompt ( Start > Run > CMD )
2. Type Systeminfo and press Enter.

To save this details to a text file :

3. Type Systeminfo>C:\systeminfo.txt

This command will save a text file named systeminfo in C drive.
You can change the path for you use.

OR

1. From the Start menu, select Run.Type msinfo32.exe and press Enter.
You will have everything listed there.

To know more,
From Start menu, select Help and Support.
Under Pick a Task ,select Use Tools to view your computer information and diagnose problems.

From the left pane, select Computer Information and select relevant category from the right pane.