If you have done just about everything that you possibly can to make your computer as fast as it can go and are still looking for a bit more then you have come to right place, well sort of. See what most people don't seem to realize is that you can actually be the main bottle neck that is slowing down your computer. There really are two things that are slowing your down: the first is that you really need to know how to type quickly and the second is that you need to know at least a few basic windows shortcuts.
If you are typing a lot (and even if you don't type a lot) then it's is in your best interest to learn how to how to type properly and to stop using the hunt and peck method. Now I'm not going to teach you how to type properly because it just isn't possible to write about that in this short article, but what I am going to tell you is that if you are using the hunt and peck method (hunt and peck is when you use your pointer finger from both hands to pick on one letter on the keyboard at a time) then you should really consider taking the time to learn how to type properly. It will take a long time for you to learn it but the rewards are well worth the wait. Think of it like this - you are investing some of your time right now to save a lot of time in the future.
Now when it comes to using the windows keyboard shortcuts you are going to have to practice them in order to remember them so that you will be able to use them without thinking. Now keep in mind that most of the shortcuts that I am going to show you are just for the Windows environment and some can be used on most windows programs (like Office, Excel etc...). If there are some programs that you use frequently I suggest that you take the time to learn a few of the shortcuts that it has to offer - you spend a lot of time using the programs anyways, why no reduce the amount of time you spend looking for things on it?
Lets start off by learning how to switch from one application to another on the task bar quickly. If your main way of doin this is to simply click on them with the mouse, you are just wasting your time, and I am going to show you a much quicker way to do this. Here's how its done: open a few programs (Notepad and Calculator will do just find for this exercise) and hold down the Alt button and then press the Tab key a few times. What this will do is it will allow you to cycle through your currently open programs. It's a much quicker way to move from one program to the next without using your mouse. If you want to get to the task manger by using only one hand, just press Ctrl + Shift + Esc (at the same time) all on the left hand side of the keyboard. Now, if you want to close a program quickly just use Alt + F4. To save a program use Ctrl + S. To go straight to your desktop use the combination: windows button + M.
Practice these shortcuts as much as you can - trust me once you start to get use to using them you will save time.