PC slow - Disk usage on 99%

  • Hi there and welcome to PC Help Forum (PCHF), a more effective way to get the Tech Support you need!
    We have Experts in all areas of Tech, including Malware Removal, Crash Fixing and BSOD's , Microsoft Windows, Computer DIY and PC Hardware, Networking, Gaming, Tablets and iPads, General and Specific Software Support and so much more.

    Why not Click Here To Sign Up and start enjoying great FREE Tech Support.

    This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.
Welcome to our Community
Wanting to join the rest of our members? Feel free to sign up today.
Sign up
Not open for further replies.


PCHF Member
PCHF Member
Dec 11, 2016
Windows 10, everything was working fine for me since the day Windows 10 was released. However in the last 3 days, my PC became extremely slow.

3 days before, I noticed that the PC became too slow that sometimes it started freezing. However after 2-3 hours it started working normally so I thought it was auto-scan from Windows Defender so I thought it wasn't a big deal. I don't think I have malware on my PC, haven't downloaded or installed anything recently. I use Windows Defender and MalwareBytes.

Today in the morning it was working fine but after 2 hours, it started being slow again and it been almost 10 hours that the Disk Usage on Task Manager is on 99%-100%. After restarting the PC, it took about 7-10 minutes to boot Windows which is not normal.

Here is a picture of Task Manager and the latest Windows updates.

Last edited by a moderator:


Malnurished Mod
Security Team
Jul 22, 2016
Welcome to PCHF Lets get some info from your machine, to get things rolling.

Step 1: Speccy Scan.

  • Please go here and download Speccy.
  • Install and run the program.
  • Upon Completion:
  • Hit File
  • Publish Snap Shot
  • A link will appear, post that link.

Step 2: MiniToolBox Scan

Please download MINITOOLBOX and run it.

Checkmark following boxes:

Flush DNS
Reset FF proxy Settings
Reset Ie Proxy Settings
Report IE Proxy Settings
Report FF Proxy Settings
List content of Hosts
List IP configuration
List Winsock Entries
List last 10 Event Viewer log
List Installed Programs
List Users, Partitions and Memory size
List Devices (problems only)

Click Go post the result.

Step 3: Autoruns Scan.

Download Autoruns and Autorunsc Unzip it to your desktop and then double click autoruns.exe
After the scan is finished then click on File>>>>>>>>>>>Save
The default name will be autoruns.arn make sure to save it as Autoruns.txt under the file type option.
in other words make sure it is a .txt file instead of .arn Attach the text in your next reply.

Step 4: HijackThis.

1- Please click HERE to download HijackThis.
2- Run the program.
3- Click on the Main Menu button if not already there.
4- Select Do a system scan and save a logfile.
5- Copy paste the log here.

Step 5: Security Check Scan.

  • Download Security Check to your desktop.
  • Right click it run as administrator.
  • When the program completes, the tool will automatically open a log file.
  • Please post that log here in your next post.
Not open for further replies.