IOS errors are the messages you get at bootup, the failed to load files in the bootlog, and the corrupted font files that cause you to get locked out of Windows. RegRepair is the only utility available today to fix these errors. This utility does more then just IOS errors, it finds and removes duplicate fonts updated and repairs system files and more.
RegEditr
RegEditor is a registry editing tool which works with .REG files. Small, fast and powerful.
Registry Mechanic
Registry Mechanic is an advanced registry cleaner for Windows that can safely clean and repair problems with your registry in a few simple mouse clicks! Easily fix problems with the Windows registry that are a common cause of crashes and errors.
Free Registry Repair Master
Using Free Registry Repair Master to scan, identify,clean and repair errors in your Windows Registry, and keep your computer clean and efficient by reducing application error messages, improving startup speeds, as well as increasing computer performa
Registry Clean Pro
Registry Clean Pro is a handy utility that scans the Windows registry for invalid entries and safely removes them. Registry Clean Pro can check the registry in background mode and alert you when it finds any errors.
Registry Drill
The Registry Drill is the most in-depth Registry utility. Going through the Registry character by character searching for any possible errors.