Fast Solution to Error: CPU 50%+ When computer is basically idle__Computer very slow today, but not yesterday

CPU 50%+ When computer is basically idle__Computer very slow today, but not yesterday

Today, my computer is running very slowly and choppy.
In task manager, CPU is always at 50% or higher when no tasks are running.
I don't know why this just happened out of nowhere, but I don't know what to do.
Things I have noticed:
In task manager, showing processes from all users, the two Things that use up CPU are: System Idle Process (under user name, SYSTEM), and System ((under user name, SYSTEM)(also the description says NT Kernal & System).
Both use up around 48-50 CPU while running nothing, while System Idle Process' CPU drops dramatically whenever I click something.
If anybody can help me figure out why Vista is acting up today, I would greatly appreciate it!

Solutions to the Problem CPU 50%+ When computer is basically idle__Computer very slow today, but not yesterday

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Wow, I fixed the problem right before you posted! What a coincidence! I was kind of dissapointed that it took me tree hours to find out how to fix it, turns out all I needed to do was restart my computer.
After the restart, "Sysem" was at 3% CPU.
Now everything
is running back to normal.
I'm still going to try and find out what quite it does, and why it can inflate itself into a giant CPU eating monster.
Thanks for your help!

Open Action Center by clicking the Start button Picture of the Start button, clicking Control Panel, and then, under System and Security, clicking Review your computer's status.

Update and run your antivirus software. Windows doesn't come with antivirus software, but Action Center can often monitor the antivirus software that you or your computer manufacturer have installed.

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