My old stationary PC

I'm stubborn enough to continue to use the old home PC I paid a fortune for years ago. Yesterday I used different techniques to try to speed it up and then tried to reduce the noise by changing the power supply (just to give you an idea of what I'm up to). My children thought I had gone crazy when they found me on the kitchen floor using a saw in the PC.
People tell me I need a man. Well, most men don't change power supplies in their PCs, trust me!