1. Put the Windows Windows 7 installation disc into the disc drive, and then start the computer.
2. Press a key when the message indicating "Press any key to boot from CD or DVD …". appears.
3. Select a language, a time, a currency, and a keyboard or another input method, and then click Next.
4. Click Repair your computer.
5. Click the operating system that you want to repair, and then click Next.
6. In the System Recovery Options dialog box, click Command Prompt.
Then type: disk list
Type: sel disc 0
The type: clean
Exit the command prompt and restart the installation
In versions of Microsoft Windows Setup that are earlier than Windows 7 setup, hard disks are marked with distinct values to distinguish them. However, this method of distinguishing hard disks is no longer supported because of the potential for data corruption
on hard disks.
Do you have more than one hard drive connected to your computer?
If you have two hard drives, remove the second hard drive and continue with the installation.
If that does not work, try to format the C: drive while installing the operating system.
You need to select the “format” option from “advanced” within Windows 7 installation.
Best, Andre Windows Insider MVP MVP-Windows and Devices for IT twitter/adacosta groovypost.com