After Norton Security installation my PC windows xp is slow and processor working at 100%.
Any suggestion please.
What security software did you have before installing Norton Security? Did you fully remove it with the removal utility for that software?
kaspersky antivirus 2016 and removed with utility, I think some process start in background of Norton which slow the speed and used 100% cpu.
Is this the tool you used? http://support.kaspersky.com/common/service.aspx?el=1464
Just using the uninstall from your installation is not enough.
What task is showing the high CPU use in Windows Task Manager?
Your XP computer must have the SSE 2 CPU or else it wouldn't install. Perhaps you need fresh install of your Norton product, but wait until peterweb responds back.
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