The No-Reformat, Non-Destructive Total-Rebuild Windows XP Fix. Fred the Langa reckons you can ‘non destructively’ repair a dodgy Windows XP installation while leaving your existing applications untouched and fully working. I’m sure I’ve tried this and failed miserably, but maybe I did something wrong. You have a go.
But it’s worth exploring because this option lets you completely and nondestructively rebuild, repair, or refresh an existing XP installation while leaving already-installed software alone (no reinstallation needed!). It also leaves user accounts, names, and passwords untouched and takes only a fraction of the time a full, from-scratch reinstall does. And unlike a traditional full reinstall, this option doesn’t leave you with two copies of XP on your hard drive. Instead, you end up with just the original installation, but repaired, refreshed, and ready to go.