Thank you all for your quick response to my question. As I am a novice in Win 7, I see I have much to learn.
I installed Win 7 and it went through 4 of the 5 steps in the installation process: Copying Windows Files, Expanding Windows Files, Installing Features, and Installing Updates, but when the installation step Completing Installation was due to run, I got the following message on my screen: Disk error; Press any key to restart.
I tried the installation 4 times and received the same message four times. I'd like to know which disk has the disk error: the installation disk or the hard drive? What do I do now?