Delete  programs
                                Delete or uninstall the programs that are of no use. These unused programs not only occupy your hard disk space, but also hamper overall PC speed.
                             
                            
                                Prioritize  programs
                                Prioritize your programs to run at Windows startup as too many applications running when a Windows start hinders the PC performance.
                             
                            
                                Disk defragmentation 
                                Perform hard disk defragmentation to rearrange the fragmented data on your hard disk. Fragmentation impedes the speed of your PC.
                             
                            
                                Remove viruses
                                
                                    Remove viruses, spyware and other malicious
                                            programs by installing cutting-edge Antivirus software on your computer.
                                
                             
                            
                                Troubleshooting
                                Go to your system's control panel,Click Troubleshooting-Click check for performance issues' under 'System and Security'