Toshiba satellite c655 windows 7

Hello
My laptop cpu utilization was running at 100% all the time so i tried to uninstall programs that i thought were irrelevant. I think i uninstalled a screen resolution program as i can only select 800x600 or 1024x768. Can anyone help.
Thanks
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  1. You must have uninstalled your graphics driver.

    Go here:
    http://www.nvidia.com/Download/Scan.aspx?lang=en-us

    Allow the Java applet to run an automatic graphics driver detection, and install the driver it recommends.

    Anyway, if the processor is under 100% load without you knowing what does it do, this indicates some sort of malware infection. You should
    - inspect the running processes to find out, what might cause the load
    http://en.wikipedia.org/wiki/Windows_Task_Manager
    - if necessary, run antivirus/antimalware scans
    http://www.malwarebytes.org/
    - alternatively, you can back up your personal files, and restore the factory setup, if the feature is available on your computer/you have the restoration disks. (Of course you could do a complete operating system reinstallation too, if you have an install disk.)
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