Cpu usage high on macbook air in Windows 8.1

Guys Please Help me!!! 
I have installed windows 8.1 using Bootcamp. And each time I open my Task manger the Cpu usage spikes to 100 and return to normal. I searched internet several hours. I installed antivirus but it didn't help me. I re installed windows 8.1 and didn't install anything yet but the same thing occurs. Is this a external problem?
Model= Mac air A1466.. 13 inch
http://prntscr.com/4imrae

I have had bootcamp running on this computer for since june last year and this has only just started happening. where abouts do i get the windows support software? that could be the problem

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    Guys Please Help me!!!
    I have installed windows 8.1 using Bootcamp. And each time I open my Task manger the Cpu usage spikes to 100 and return to normal. I searched internet several hours. I installed antivirus but it didn't help me.
    Model= Mac air A1466..

    I have reinstall the windows yesterday and i havent install anything but cpu 100% when task manger open then it drops to 5-8
    http://prntscr.com/4imrae
    i accidentally clicked this solved my question -_-

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    Apologies the rich text editor is not working and i am unabel to format this code properly
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