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This means you’ve got some work to do before you can install Windows 7 on

a hard disk that already has an earlier version of Windows on it. (If you don’t

have anything of value on the drive and don’t mind wiping it clean, check out

“Install Windows on an Empty Hard Disk” on page 10 for instructions.) The

good news is that there isn’t much to do, despite what Microsoft would lead

you to believe.

Reinstall Windows 7

You

may find yourself in a position where you’ll need to reinstall Windows

7, usually in an effort to solve a nasty problem or to repair a damaged instal-

lation. The procedure you choose depends on the state of your computer.

If Windows won’t start, see the section “What to Do When Windows Won’t

Start” on page 355. In most cases, you’ll need your original Windows setup

disc, but you won’t need to reinstall.

If you’re able to start Windows and it’s working well enough to reliably access

your DVD drive, but poorly enough that you’re considering reinstalling, then

you’ll need to decide whether to reinstall (“upgrade” as Microsoft setup puts

it) or install a clean copy on your PC.

An in-place reinstallation is the easiest way to go, and despite the warnings in

the previous section, probably won’t make things any worse. Just pop the

DVD in your drive and follow the prompts. When asked what type of instal-

lation you want, select Upgrade and then follow the prompts. But if your

Windows installation is sufficiently munged, you may choose to install fresh

without harming your existing installation, as described later in this section.

Before you get started, it’s a good idea to collect a few things

that

might be harder to get once you’ve begun setup. For one,

put a Windows 7-compatible driver for your network adapter

on a USB flash drive or CD, just in case Windows doesn’t

support your hardware and thus won’t allow you to download

the files you need. Also, since you’re essentially doing a fresh

install, make sure you have the installers for your most im-

portant applications. And if there’s anything you absolutely

can’t live without, use Microsoft’s Compatibility Wizard to

see if you’ll need to put off a Windows 7 upgrade until there’s

an update for your must-have application or device driver.

Now, if you’re upgrading from Vista, you can technically use the Upgrade

feature shown in Figure 1-3, but don’t be fooled: it’s not all it’s cracked up to

be. Sure, you won’t have to reinstall all your applications—although many will

Install Windows 7 | 19

Get Started with

Windows 7

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