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Windows 10 running slow sometimes or hang. Task managers shows disk 100% usage.

My laptop configuration;

1) Operating System

Windows 10 Home Single Language 64-bit

2) CPU

Intel Core i7 5500U @ 2.40GHz   
Broadwell-U 14nm Technology

3) RAM

16.0GB Dual-Channel DDR3 @ 798MHz (11-11-11-28)

4) Motherboard

Dell Inc.

5) Graphics

Generic PnP Monitor (1600x900@60Hz)
Intel HD Graphics 5500 (Dell)
4095MB NVIDIA GeForce 920M (Dell)   
ForceWare version: 353.62
SLI Disabled

6) Storage

1863GB Seagate ST2000LM003 HN-M201RAD (SATA)

7) Optical Drives

PLDS DVD+-RW DU-8A5LH

8) Audio

Realtek High Definition Audio
magicandre1981
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Karan Dembla
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  • From when you are getting this issue. After installing any software or antivirus? – BDRSuite Jul 25 '16 at 06:35
  • Using 2-3 software at a time. – Karan Dembla Jul 25 '16 at 06:54
  • How old is your machine / HDD? – Darius Jul 25 '16 at 07:11
  • Such a question is very general and unanswerable. You must try to refine the problem better. Use Sysinternals ProcessExplorer to see, what process is using the disk. – Vojtěch Dohnal Jul 25 '16 at 07:11
  • @Darius Brought laptop 8 months ago. Don't know manufacture date of HDD. – Karan Dembla Jul 25 '16 at 07:41
  • @VojtěchDohnal Can you help me that? – Karan Dembla Jul 25 '16 at 07:42
  • Check if write caching is enabled in your HDD. Right-click logo, choose device manager, select "disk drives", double click your drive, select "Policies" tab, check the option to "Enable write caching on the device". – Adrien Jul 25 '16 at 11:15
  • Install the WPT (part of the Win10 SDK: https://dev.windows.com/en-us/downloads/windows-10-sdk), run WPRUI.exe, select **First Level**, **CPU usage**, **DiskIO**, **FileIO** and click to start. Now capture 1 minute of the DiskIO. After 1 minute click on **Save**. Zip the large ETL file into zip/RAR file, upload the zip (OneDrive, dropbox, google drive) and post the share link here. I'll try to analyze it – magicandre1981 Jul 25 '16 at 15:30
  • have you captured the trace? – magicandre1981 Aug 01 '16 at 16:21

1 Answers1

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Run a tool named Sysinternals Process Explorer.

After you have started Process Explorer, click on the View menubar item and then Select Columns.

enter image description here

Click on the Process I/O tab and check:

  • Read Bytes
  • Write Bytes
  • History

Hit OK.

You will see a separate chart of I/O activity for each process under I/O History column and amount of data read and written. It is not only disk activity, see here, but most of it should be disk or network activity, so you can try to disconnect from network to see only disk activity.

There you should determine, which process is eating your disk performance. Usually that process would also consume some significant processor time.

Some services are reported that can cause 100% disk usage. You can try to stop them one by one using following commands and see if it helps:

net.exe stop WSearch
net.exe stop Superfetch
net.exe stop Bits

You should also scan your PC with MBAM Antimalware.

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Vojtěch Dohnal
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