It would be useful to know what's slowing it down.
Press Ctrl-Alt-Del (once), and select Processes. Then click on the "CPU" column so that the heaviest user is at the top, and note what's running and how much processor it's using.
Mine, when I do that, has "System Idle Process" (ie nothing happening) at 91 to 99%, Taskmgr.exe (the bit displaying processes) at 1%, and a few other processes flicking in and out at the odd percent or two.
There are 48 processes in total. The machine's speed is fine.
How does yours compare?