The human brain really cannot be equated to a hard drive or a CPU. If you try to find out the storage capacity of your brain, the number becomes mind blowingly huge. Every time that you walk from your computer to your kitchen, your mind is simultaneously controlling trillions of cells, telling each and every one what to do to allow you to walk, taking in unimaginably high-res video and rendering it in real time, then interacting with the "video" to tell you where to walk so that you don't bump into a wall. Behind all of that, the mind is controlling the beating of your heart, your breathing, your digestive system, and performing maintenence on anything that needs healing, which requires control over even more trillions of cells to all fit into the larger system. Aside from all of that, you are also remembering exactly which way to go and every time that you see something and recognize it, your mind is recalling detailed 3d blueprints in full color of every single step of the way. You are also feeling the air interacting with your skin and the ground interacting with your feet, and your mind is processing all of that information to tell you exactly what is happening and what it should feel like in real time. While you are walking, you may be thinking of what happened that day, recalling what you were doing at every moment of the day and making decisions about what you should to tomorrow based upon what happened that day.
For all of that work, how hard is it to walk to the kitchen?
The computer is billions of times more powerful than any computer today. Yes, a computer may be able to store exact data, but other than that, what can a computer do that we cannot do millions of times faster and better? Just imagine how unimaginably complex a simple motion such as walking is. When you are walking, your mind is controlling billions of cells, telling each one individually what to do to fit into the larger motion, deciding which place and angle is best for your foot to go to achieve it's goal, all without recieving code from a pre-written program to tell it how to do so. The mind can react and adapt to fit the situation at hand billions of times better than any computer on earth.
If you want to try to equate the mind to a computer, look at a robot and how "smart" it is. It may have the most powerful computer chip in the world, but there's no way it is going to be able to function normally in a society. The most powerful computer chip in the world cannot even come close to the human mind.