When your laptop becomes old, you don’t have to throw it away. You can do some basic maintenance stuff to prolong its life.
When my HP laptop got one of its keybord keys broken, I ordered a new keyboard and I installed it. I also took the opportunity to clean its fan which reduced its noise drastically.
Watch my video to get the full detail on how to replace the Keyboard and clean the CPU fan on an HP Compaq 6720s Laptop.