You need to clean the registry files and protect from virus
The computer software and versions are updating day by day. Hence you want to installing the new software and removing the old one. That time you uninstall the old version of software, the software files are removed but the windows registry files are not removed.
Problems with windows registry is common fact of windows error messages. The windows error messages are comes often and often. The registry files are occur various reason, reference files are left after uninstallation, incorrect format of removal software, corrupt or missing hardware drivers, orphaned start programs. However, these files are stored in the system memory and the computer speed becomes to low.