Introduction: How to Fix 100% Disk Usage for Windows 8.1

Picture of How to Fix 100% Disk Usage for Windows 8.1

Like the title says, we're gonna try to fix the 100% disk usages problem in Windows 8.1.

I have looked at several different systems (Windows 7 and 8) that had the disk usage near 100%. The problem is that each one had a different solution so, it 's hard to say what the fix would be. But I can give you some ideas to help isolate the cause down.

The solution for the 100% disk usages we're gonna use works in Windows 7, 8, 8.1. I didn't test it on Windows XP, Windows Vista or Windows 10.

Step 1: Open the Task Manager

Picture of Open the Task Manager

First we're gonna open the task manager and take a look at our disk usages. So as you can see it is now 100% and is slowing our computer down.

You can start task manager by right clicking on the Windows toolbar and selecting "start task manager". When task manager has oppend select the performance tab, open resource monitor, select disk tab

Step 2: Open Cmd.exe

Picture of Open Cmd.exe

So now that we know that our disk usages is too high we're gonna try to fix that. To fix the problem we're gonna use cmd to stop a Windows service that causes the 100% disk usages.

First open a cmd.exe as a administrator (windows key+x+a) or open it using the windows search function. Once you found it in your search results, right click on it and select "run as administrator"

Step 3: Execute the Cmd Commend

Picture of Execute the Cmd Commend

Now we have oppend our cmd.exe we can stop various suspected services and watch how the system responds in resouce monitor.

for example:
net.exe stop superfetch (hit enter and see if your disk usage goes down)

Step 4: Fixed!

Picture of Fixed!

So as you can see or disk usages is now 0%. Problem solved!

I hope it helped you fix the problem with your computer :) If there's anything you didn't understand or if it didn't work please let me know.
I would try to help you.

If you liked my tutorial please share it :) This is my first Instructables so don't be to hard.


GajananK2 (author)2017-09-29

100% working. thanks mate!

ParvinderK1 (author)2016-09-19

found a solution from another website, it's simple:

From the Windows Menu, go to Settings, then go to System and then go to Notifications and Actions. Turn off "Show Me Tips About Windows". That's it. It takes maybe a minute or two to lower the disk usage and I would recommend ending any process in task manager that's making the disk usage go up in the meantime. Usage percentage should go down and stay around 1-2%.


Open up a run dialog by holding down the Windows Key and pressing R. In the "Open" field, enter "services.msc". Look for "Windows Search" and "Superfetch."

Go to each of these entries. Right click on one and select "Properties." In the dropdown box labeled "Startup type," choose Disabled. After leaving the properties window, press "Stop" in the upper left corner. Do this for both.

JohnP703 (author)ParvinderK12017-09-24

Great tip! Worked for Windows 10!

MakramA2 (author)2017-08-02

hi bro. any advise for win10 ?

JayeshB9 (author)2017-06-08

Thank you so much.

SujitK15 (author)2017-03-18

thanks a ton man... it worked..!!

Nicolenev3 (author)2017-03-16

Thanks it worked,+rep :D

PaulO126 (author)2016-12-19

This is what worked for me

MuhammadA969 (author)PaulO1262017-03-12

thank you paulO126 itried this too

ACEB11 (author)2017-03-04

OK, for anyone who tried disabling stuff like superfetch and BITS,
etc. (just like I had tried to, and it still didn't work.) Looks like
they've got it sorted now.
Some sort of feedback glitch in the
program where windows would constantly look for updates and clogg
everything up. So anyway, try this (*Warning* Set aside some time for
this, when I did it I ran the program and it then spent about 5 hours
updating and installing all (155) updates it hadn't been able to do
because of the bug.) -

BrianM518 (author)2017-03-01

Thank you. Do you have a list of service names to type in the CMD prompt? Looking them up will take hours with the Disk running at 100%...

garg11 (author)2016-12-22

Doesn't work for me. and suggestions from PaulO126 also don't work.

Maybe because I did it on Windows 10. Maybe because it specific box issue.

But in my case it worked when I stopped "Sync service" - ugly green icon, in System Tray.

LuchianC (author)2016-12-17

Instantly!!! I love you man!!!

DonovanG5 (author)2016-11-30

thank you guys for the help!

jmiester (author)2016-09-08

Just... wow. I had already previously stopped Superfetch in what was ultimately a vain attempt to fisk this, but your suggestion to stop the Print Spooler... my disk usage dropped INSTANTLY... @_@ Kudos, sir!

Vijay KumarC1 (author)2016-09-07

I have tried stopping Spooler and Superfetch. This helped me. Though it took sometime, the disk usage came from 100% to 1 or 2%.

Thanks much for the info.

Clem'sG (author)2016-09-05

that don't work for me :/

Imran AhmedQ (author)2016-08-27

You are awesome Bro!!!!!

It worked for me! Dude it was a problem with print spooler service when i stopped it HDD runs smoothly.

ThunderW3 (author)2016-06-19

this helped me for now--


1. increase your virtual memory(or page memory) to atleast 4gb , just google it.

2. disable automatic defragmentation

3. press windows+s search for "services", or control panel->view local services

3.1. look for "superfetch", right click properties, startup type make it
disable, then go for recovery tab and make all "take no action"

3.2. Do the above same step for "windows search" instead of "superfetch"


and do the 3.1 (above) for 'windows modules installer', 'windows management instrumentation', 'windows update' etc which makes pc slower like 'superfetch'. just read every service on the list and before you disable any service, be sure about that turning off that service will make no harm.

KyleB135 (author)ThunderW32016-08-24

Is this a permanent fix or temporary? is this something I will need to re-enable at some point? Thanks! it worked right away just curious for any future issues.

adamk48 (author)ThunderW32016-06-23

You saved my life

ThunderW3 (author)adamk482016-06-23

its not much

botchthomas (author)2016-08-18

Fantastic keep it up Microsoft had a solution using the resgistry that did not work

RahulS373 (author)2016-08-10

Wow.... Its working perfect

RyanD153 (author)2016-08-02

net.exe stop superfetch totally worked for me. Down from 100% to 0%-23% varying.

KalderonV (author)RyanD1532016-08-04

thankssssssssssss you saved my lifeeeeeeeeeeeeeeeeeeeeee

RonniePlaysMCR (author)2016-07-28

Didnt work

The laptop is still VERY slow

Wd2019 (author)2016-07-23

Thank you so much for this! Fixed the problem! I used net.exe stop superfetch and my disk usage went from 99% to 4%! Incredible. Question though... What process is superfetch? Like what does it do?

NaveedB2 (author)2016-06-24

I realy like your post with boost of information, But I have a windows 8.1 professional product key, Purchased from: http//

I just installed windows 8.1 professional at my laptop, But not know how to activate using the activation key code.

Can I upgrade it to Windows 10 to get more features. Thanks in advance

SimenL4 (author)2016-06-17

Didnt really work for me ;_;

SimenL4 (author)2016-06-17

wait, im confused, what other things than Spooler and Superfetch do i need to remove -.- sorry if i sound abit stupid..

GabrielP98 (author)2016-06-16

what if after I hit enter it says "Access is denied." ?

LuigiD24 (author)2016-06-11



PratikB28 (author)2016-06-01

Thanks.. that was very helpful

Bomani Chisulo (author)2016-05-28

Holy crap thank you so much for this! Down to 5-10% now

DarthV9 (author)2016-05-04

i came here while installing steam, steam finished after i read it, maybe just reading this alone fixes? XD well, if you're magic, thanks, i did try it and now it's at 0-30% ;)

asabar (author)DarthV92016-05-23

Same! I came here so I could play Dota 2 in peace.

IsaacT23 (author)2016-05-23

oh gosh!! it help !! drop at least 50%.

I this commend fine to stop ?

Thank you are the my angel

MohammedR49 (author)2016-05-14

It didnt work for me. Its still at 100%.
Is there any other tutorial on how to fix this.

shahrie (author)2016-05-13

thanks alot... Solved my problem. Superfecth service is the main cause. Only i dont stop the service from command prompt, stoped it from services.msc menu. My laptop goes smooth now....

DillanC2 (author)2016-05-06

Thanks, this really helped

SassP1 (author)2016-05-06

Hello, I tried the net stop Spooler and it worked - for about 10 minutes and the disk went back up to 100%. What else can I try? I'm using either windows 8 or 8.1 32 bit.


CatH15 (author)2016-05-04

Wow! That solved my problem. Thank you so much, it was driving me crazy.

gjager (author)2016-05-04

Okay your trick worked, but it wont help when I run a certain program. when I run the program it jacks up all the space on the drive. Got any ideas on how to fix the program?

JohnT266 (author)2016-04-30

Thanks Sooooo much Dude! I only have a laptop and recently its started too crash and be very slow and unresponsive but I followed these few steps and currently disk says 1%-0%!!!!!. Keep this up Dude your certainly doing something right!

TharukaK (author)2016-04-20

Awesome, It worked. Thank you Kevin

TharukaK (author)2016-04-20

Awesome, It worked. Thank you Kevin

TylerM83 (author)2016-04-13

It worked!!! yay!!! I kept trying to play Star Wars Battlefront III but my disk kept getting to 100% and crashing!!! THANK YOU!!!

KindaK (author)2016-04-08

it worked thanks :)

About This Instructable




Bio: I'm a freelance web developer. I love to make websites, whether this is a normal site, a blog or a WordPress-driven website. As a ... More »
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