Introduction . 51. Why does Windows slow down? 6Disk Fragmentation . 6Running Software and RAM . 7Space on System Drive . 7Malware 7Windows Registry . 8Hardware Issues . 8Overheating . 8Graphics Card . 82. How can I maintain top performance? 9Keep a System and a Data Partition 9Windows 7 . 10Windows XP 12Move and Redirect All Personal Files to the Data Partition . 13Windows 7 . 13Windows XP 14Perform a Disk Cleanup 14Defragment Your Hard Drive . 16Windows 7 . 17Windows XP 18Free RAM by Uncluttering Windows Startup 19Increase Virtual Memory 20Windows 7 . 20Windows XP 22Upgrade Your RAM . 23Protect Your System from Malware 23Uninstall Programs the Proper Way . 24Windows 7 . 24Windows XP 24Outsource and Simplify System Maintenance 25Physical Hardware Care 26Clean Fans and Heat Sink 26Clean Power Supply 26Enhance CPU Cooling 273. Troubleshoot and fix an unresponsive system 28Perform General Software Maintenance 28Perform General Hardware Maintenance 29Log Into Windows Safe Mode . 29Remo...