Windows Defender running high CPU when system idle ...

Z

zucchini

New Member
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2
After around 5 minutes of my system sitting idle, MsMpEng.exe kicks in running about 50% CPU and keeps running until I start using my laptop again. I have no idea what it's doing. Or how to stop it doing it. Has anyone come across this problem before? If so, any ideas for a fix?

Many thanks ...
 

My Computer

System One

  • OS
    Windows 8 (64bit)
    Computer type
    Laptop
    System Manufacturer/Model
    HpG62293sa
    CPU
    Intel® Core™ i5-3210M processor 2.5 GHz
    Memory
    6GB RAM
    Graphics Card(s)
    Intel HD Graphics 4000
    Monitor(s) Displays
    15.6" LED Backlit
    Screen Resolution
    1366 x 768
    Hard Drives
    1 TB (SATA, 5400 rpm)
    Internet Speed
    20MB
    Browser
    Firefox
    Antivirus
    Windows Defender
When your system is idle it performs the automatic maintenance(defender performing a quick scan, de fragmentation etc)

Nothing to worry
 

My Computer

System One

  • OS
    Windows 8.1 professional x64 + WMC
    System Manufacturer/Model
    Acer Aspire 5920
    CPU
    Core 2 duo T5550
    Motherboard
    ACER CHAPALA
    Memory
    4GB DDR2
    Graphics Card(s)
    Intel GMA X3100
    Screen Resolution
    1280 X 800
    Hard Drives
    160 GB HDD
it may be that you might have scheduled a full system scan, which makes it use CPU more. so verify that you haven't scheduled a scan i can't help out more because i haven't been windows defender user for much time . :huh:
 

My Computer

System One

  • OS
    Windows 8 pro with WMC x86 & windows Blue preview x86 with Windows 7 Ultimate SP1
    Computer type
    PC/Desktop
    System Manufacturer/Model
    custom-build PC
    Motherboard
    INTEL DH55PJ MOTHERBOARD
    Browser
    google chrome
    Antivirus
    Kaspersky Pure 3.0
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