How to Fix Errors on a Computer With Freeware

1. Download a registry cleaning program such as ErrorFix, RegCleaner, CCleaner, or any other piece of freeware dedicated to cleaning the computer's registry. Over time, this area of the computer will build up with unneeded files--purging these files with free software can fix errors on your machine, improving its performance.
2. Install your chosen registry-cleaning program to your main hard drive.
3. Defragment the drive by going to the 'Start' menu, to the 'All Programs' list, the 'Accessories' folder, then the 'System Tools' folder.
4. Select your main hard drive (usually the 'C' drive) and press the 'Defragment Now' button.
5. Open your registry-cleaning program and press the 'Scan Now' button.
6. Press the 'repair' button when the scan is complete to fix your registry, solving many common computer errors.