So, you’ve been using your Windows 10 PC for a while, but lately, you’ve noticed that it’s quite sluggish and applications freeze when you launch them. Upon further investigation, you discover that the disk utilization capacity is at 100%! Strange, right?
Well, it does happen, and we’re pretty sure you are at a loss of what to do. When your disk utilization is at 100%, the total sum of the hard disk’s read/write speed has exceeded the 100 -150Mbps threshold.
Generally, the read/write speed swings between 100 and 150 Mbps. When it exceeds this range, the result is 100% disk utilization, which slows down your system. You can diagnose the problem by launching the Task Manager.
How to Launch Task Manager?
Task Manager is a Windows monitoring tool that gives you a glance at your system’s performance and running applications. The task manager allows you to:
View Running applications and services
Forcefully close / end running applications
View applications’ RAM and CPU utilization
View startup programs
View system’s performance (RAM, CPU, Disk, and Network)
To access the task manager Press Windows Key + X.
Scroll and click on the ‘Task Manager’ option.
Alternatively, you can right-click on the taskbar and click on the ‘Task Manager’ option as shown below
After clicking on the ‘Task Manager’ option, the Task manager window will open.
As you can see above, the Disk utilization capacity is at 100% and has a red outline. There are several fixes for this phenomenon, depending on what is causing it. In this article, we’ll dive further into how you can remedy this problem.
The first fix for every Windows problem is Restarting the device. The Restarting would ensure that any corrupt application which might be the reason for the 100% disk usage would be stopped. To detect the application which is causing the 100% disk usage, you can restart the system in Safe Mode.
Check for Malware Infection
A malware infection could also be the major reason for the slow system performance and the 100% disk usage. After infiltrating your device, malware can hide itself and remain active in the background, thus using the system resources. To detect and remove the malware from the system, you can install a robust antimalware solution like Malwarefox in your system.
Disable SysMain (Superfetch)
SysMain, which was formerly known as Superfetch, is a service that runs in the background in Windows systems – ever since Windows Vista – and quietly analyzes the RAM and applications that your system uses most.
It then preloads frequently used applications into the RAM so that they are loaded much faster with subsequent launches. The drawback to SysMain is that it constantly hogs the CPU and RAM, slowing down applications considerably.
Is SysMain useful? For the most part, yes, but in some cases, you might not need it. For instance, the impact it makes in preloading apps might hardly be noticeable when using an SSD drive. This is because SSD drives are much faster than traditional mechanical drives and so do not need to preload applications.
Is it okay to disable the SysMain service? Absolutely! If your system is ‘hanging,’ it’s safe to proceed. But if all’s well, there’s no need to disable it.
Disable SysMain using Services
Press the Windows Key + R
In the dialogue box that appears, type services.msc in the text field.
The ‘Services’ window will open, displaying all the running services on your PC. Scroll down and locate the ‘SysMain’ option.
Right-click on ‘SysMain’ and select the ‘Stop’ option as shown below.
This should free up some disk utilization and allow your applications to run seamlessly. To stop it from running on startup follow these steps.
Is your Windows system still running slowly? Don’t fret. You can go ahead and disable the Windows Search service on your system. Windows Search is notorious for increasing the load on the system’s disk.
To temporarily remedy this until the next reboot, take the following steps
Go to the search bar and type ‘Command Prompt’. Run it with Admin Rights.
Once open type ‘net.exe stop “Windowssearch”‘ in the command box.
To disable the service permanently, follow these steps
Hit Windows Key + R
In the dialogue box that appears type services.msc.
Scroll down and locate Windows search
Right-click and select Properties
In the ‘Startup type’ pull-down menu, click and select ‘Disabled’
Click on ‘Apply’ then ‘OK’.
Reset Virtual Memory
Virtual memory is a memory that sits on your hard drive and acts as an extension of RAM. The computer normally uses it when the system is running low on RAM. Windows switches to virtual memory where it temporarily stores files and then swaps them back to the main memory as required. If virtual memory is unnecessarily high, it might cause degradation in your system’s performance.
To reset virtual memory follow below steps:
Navigate to Control Panel -> System and Security and click on System.
Under About scroll down and select Advanced system settings.
Click on Settings under the Performance heading.
Under the Advanced tab, click on Change below the Virtual memory heading.
Next, uncheck ‘Automatically manage paging file size for all drives.’
Highlight the System Volume and click on the ‘Custom size’ radio button.
Enter your RAM’s size in MB in the ‘initial size’ text field.
‘Maximum size’ should be 1.5 times the RAM’s size. For instance, for a 4GB RAM size, the maximum size should not exceed 6144 MB (4096 x 1.5).
Finally, run a chkdsk command to scan and fix issues with your hard drive.
Launch Command Prompt as Admin.
Type chkdsk /f C:
Hit Enter. The system will notify you that the drive is currently in use and will execute the command when you restart the system.
The 100% disk usage problem can also caused by some antivirus programs. It may be because of some faulty update or a corruption by a malicious file. To fix this, you can temporarily disable the antivirus problem and check whether the problem persist. If the problem is fixed, then the antivirus is the culprit. You can either uninstall and re-install it or update it.
Ideally, your system should run well below 100% in Disk usage. When all the above fails, this could be an indicator of hardware failure or aging. In that case, we advise you to back up your data in another location and purchase and install a new hard drive on your PC. Then, install Windows 10 and copy your data back onto the computer. It can also mean that the Windows 10 operating system might be corrupted. So you can reinstall or refresh the Windows in that case.