That's actually common. As long as the CPU usage goes down to a normal
level once startup is finished, and you have no other performance issues,
there's no problem that needs to be addressed.
Here's my standard post on this subject:
My personal view is that the attention many people pay to how long it
takes to boot is unwarranted. Assuming that the computer's speed is
otherwise satisfactory, it may not be worth worrying about. Most people
start their computers once a day or even less frequently. In the overall
scheme of things, even a few minutes to start up isn't very important.
Personally I power on my computer when I get up in the morning, then go
get my coffee. When I come back, it's done booting. I don't know how long
it took to boot and I don't care.
However if you do want to address it, it may be because of what programs
start automatically, and you may want to stop some of them from starting
that way. On each program you don't want to start automatically, check its
Options to see if it has the choice not to start (make sure you actually
choose the option not to run it, not just a "don't show icon" option).
Many can easily and best be stopped that way. If that doesn't work, run
MSCONFIG from the Start | Run line, and on the Startup tab, uncheck the
programs you don't want to start automatically.
However, if I were you, I wouldn't do this just for the purpose of running
the minimum number of programs. Despite what many people tell you, you
should be concerned, not with how *many* of these programs you run, but
*which*. Some of them can hurt performance severely, but others have no
effect on performance.
Don't just stop programs from running willy-nilly. What you should do is
determine what each program is, what its value is to you, and what the
cost in performance is of its running all the time. You can get more
information about these at
http://castlecops.com/StartupList.html. If you
can't find it there, try google searches and ask about specifics here.
Once you have that information, you can make an intelligent informed
decision about what you want to keep and what you want to get rid of.