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why is "antimalware service executable" using up so much ram and CPU?

Clubconsoles

I was wondering what "antimalware service executable" is because it's using like 30% of my I5 4690k and over 100MB of ram! It's using so much ram on my 2GB atom powered laptop that it is really slow and if I have more than 2 chrome tabs open with nothing else open chrome crashes! I am running windows 10 home and my laptop is running windows 8.1. (I know windows 8.1 sucks but I can't get a upgrade.)

 

Thanks.

 

EDIT: It is also writing 9.7mb/s or 14mb/s of data to my disk CONSTANTLY and sometimes it stops writing to my disk.

 

EDIT 2: As soon as I post this it starts only using 0.3% of my CPU. But the ram issue is still a problem with my laptop.

PC Specs:

 
Core I5 4690K CPU
Gigabyte GTX 960 windforce 4GB GDDR5 GPU
Corsair 100R case
Seasonic 620W S12-II PSU
Kingston SSDNow 120GB SSD
Toshiba 1TB HDD
Asrock H97 Pro4 motherboard
8GB panram DDR3 1600 RAM
Windows 10 home 64 bit
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I was wondering what "antimalware service executable" is because it's using like 30% of my I5 4690k and over 100MB of ram! It's using so much ram on my 2GB atom powered laptop that it is really slow and if I have more than 2 chrome tabs open with nothing else open chrome crashes! I am running windows 10 home.

 

thanks.

Virus? What antivirus are you running?

Main Gaming Rig:

Spoiler

Core i7-4770, Cryorig M9i Cooler, ASUS B85M GAMER, 8GB HyperX Fury Red 2x4GB 1866MHz, KFA2 GTX 970 Infin8 Black Edition "4GB", 1TB Seagate SSHD, 256GB Crucial m4 SSD, 60GB Corsair SSD for Kerbal and game servers, Thermaltake Core V21 Case, EVGA SuperNOVA 650W G2.

Secondary PC:

Spoiler

i5-2500k OCed, Raijintek Themis, Intel Z77GA-70K, 8GB HyperX Genesis in grey, GTX 750 Ti, Gamemax Falcon case.

 

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Virus? What antivirus are you running?

 

Malwarebytes anti malware

PC Specs:

 
Core I5 4690K CPU
Gigabyte GTX 960 windforce 4GB GDDR5 GPU
Corsair 100R case
Seasonic 620W S12-II PSU
Kingston SSDNow 120GB SSD
Toshiba 1TB HDD
Asrock H97 Pro4 motherboard
8GB panram DDR3 1600 RAM
Windows 10 home 64 bit
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Malwarebytes anti malware

Try a free trail of hitman pro on it. You might (And this is pure speculation) have ransomware encrypting your files.

Main Gaming Rig:

Spoiler

Core i7-4770, Cryorig M9i Cooler, ASUS B85M GAMER, 8GB HyperX Fury Red 2x4GB 1866MHz, KFA2 GTX 970 Infin8 Black Edition "4GB", 1TB Seagate SSHD, 256GB Crucial m4 SSD, 60GB Corsair SSD for Kerbal and game servers, Thermaltake Core V21 Case, EVGA SuperNOVA 650W G2.

Secondary PC:

Spoiler

i5-2500k OCed, Raijintek Themis, Intel Z77GA-70K, 8GB HyperX Genesis in grey, GTX 750 Ti, Gamemax Falcon case.

 

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Try a free trail of hitman pro on it. You might (And this is pure speculation) have ransomware encrypting your files.

 

It's been on my laptop for quite some time and none of my files are encrypted. I will try it anyways. Now it is writing like nothing to the disk.

 

EDIT: as soon as I run hitman pro it starts writing to my disk and eating up my CPU again.

 

EDIT 2: Nothing. Just loads of tracking cookies.

PC Specs:

 
Core I5 4690K CPU
Gigabyte GTX 960 windforce 4GB GDDR5 GPU
Corsair 100R case
Seasonic 620W S12-II PSU
Kingston SSDNow 120GB SSD
Toshiba 1TB HDD
Asrock H97 Pro4 motherboard
8GB panram DDR3 1600 RAM
Windows 10 home 64 bit
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Virus? What antivirus are you running?

It's Windows Defender.

 

Malwarebytes anti malware

That's an antimalware, not antivirus.

 

If you want to disable it, use this: https://www.reddit.com/r/Windows10/comments/34x6a2/howto_manually_disable_windows_defender/

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The antimalware service executable is windows defender which would be running if you have no active anti virus running.

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