Help Please is no way to start a thread.
The title should refer to the question or if a few words will cover be the question.
Then we know what we are in for.
The machine you have is running at the speed it was designed to run at-
Download this system checker program click here
This will tell you what is going on.
When people tell you this that or the other thing will make the machine go faster -take it with a pinch of salt.
Visit here regularly and pick up tips on how to keep the system sweet, how to make use of utilities such as Ccleaner to remove temporary file built up
And leave it at that
As you get more experience and have more money to spend go for a new base unit - don't waste time adding bit's unless of course you are a budding experimenter.