If youre running the same hardware for a long time, running some maintenance tasks will go a long way in keeping your precious battlestation of a PC in top shape. While you should back up your important files and defragment drives on a monthly basis, tasks like replacing your thermal paste should also be performed every few years to improve the longity of your PC. Over time, the thermal paste between your processor and the heatsink can dry out and lead to high temperatures. Not to mention, overclocking a processor with a dried thermal paste can lead to certain stability issues when you attempt to push its frequencies past their default values.