Windows XP Registry Cleaner - Version 5.07 XP Registry Cleaner - Instant Registry Fix. Scan Your XP System in Seconds! If your windows XP system is running very slow on your PC, or if you are seeing alerts that say "registry error", then you need to scan and clean your registry. The scan will immediately pin-point the problems on your PC and isolate them for repair. Simply use the demo version for limited repair or upgrade for a full system clean (recommended). Download & Scan Now