You can’t upgrade to Windows 7 from a Windows XP computer — you have to install Windows 7 over Windows XP. Be sure to back up any important programs or files on your computer. If you’re installing Windows 7 on an empty hard drive, you obviously don’t need to worry about backing up any data since the hard drive doesn’t have any.
If your drive has less than 20GB of free space, insert the Windows 7 DVD into your DVD drive and restart your computer.
Your computer restarts and begins loading files directly from the Windows 7 DVD. (You may have to press a key to tell your computer to load from the DVD drive rather than the hard drive.) Then go to Step 9.
If your drive has more than 20GB of free space, insert the Windows 7 DVD into your DVD drive and choose Install Now.
Your computer begins installing temporary files.
Choose Go Online to Get the Latest Updates for Installation (Recommended), select the I Accept the License Terms check box, and click Next.
In the new screen that appears, type and retype a password, type in a password hint, and then click Next.
The password hint should be a phrase that reminds you of your password but doesn’t give it away. For example, if your password is the name of your elementary school, the password hint could be, “My first elementary school.”
This selection allows Windows to visit the Internet to update itself with security patches, warn you of suspicious Web sites, check for troubleshooting information, and send technical information to Microsoft to fine-tune Windows’ performance.