If I see a blue or black screen or a screen that doesn't change, is my installation broken?

Your computer might have hardware or software that is incompatible with Windows 7. If you have this problem, follow these steps:

1. Wait about 10 minutes to see if the installation continues. Watch the hard disk indicator (often a small light on your computer that blinks when your hard disk is running) to see if there is any activity. If your hard disk appears to be working, the installation should be in progress. If your hard disk does not appear to be working, go to step 2.
2. Uninstall all antivirus software, and then restart your computer. Don't forget to enable antivirus software after you install Windows.
3. If the installation fails again, there might be a hardware incompatibility problem. For more information, go online to the Windows 7 Upgrade Advisor website.
4. If you have compatible hardware and your computer still stops responding, disable any unnecessary hardware. Remove universal serial bus (USB) devices; remove or disable network adapters, sound cards, and serial cards; and then restart the installation.
5. If the computer still stops responding during installation, contact your computer manufacturer or retailer.