> How to > Partition Manager > [2018 Fix] Fix Windows 10 Very Slow/Unresponsive/Running Slow Error

[2018 Fix] Fix Windows 10 Very Slow/Unresponsive/Running Slow Error

Updated on Dec 13, 2018 by Tracy King to Partition Manager

Does your Windows 10 become extremely slow to respond after updating to the latest new OS? Is Windows 10 running very slow and even unresponsive on your computer? Relax! Reliable methods are available here to guide resolve Windows 10 unresponsive and very slow issue with ease now.
C drive gets full for no reason
The system disk is running out of space
Windows 10 takes a long time to boot up
High CPU Usage in Windows 10
100% Disk Usage in Task Manager

Windows 10 becomes very slow and unresponsive

"My Windows 10 becomes extremely slow after installing the new system. The boot time gets prolonged, and sometimes it even gets stuck with 4 or 5 programs running at the same time.
The system also likes to remind me that the running program is not responding, and then the whole Windows 10 becomes unresponsive. 
I’m tired of this situation, and I also don’t want to rollback Windows 10 to a previous state.
So what else can I do to resolve Windows 10 slow issue on my computer?

When your computer becomes extremely slow, do you know what causes your Windows 10/8/7 very slow to respond? Here in the below is a list of common problems that most Windows 10 users have experienced. 

No matter which problem is annoying you, your Windows PC will somehow undoubtedly become slow and even unresponsive. Here in the below, you’ll see multiple solutions to resolve different problems that are troubling you and make your computer running fast again.

RECOMMEND: Improve Windows 10 Speed and Performance by using partition manager freeware

When your computer is becoming slow and even unresponsive, don’t bother for having any effective methods for resolving such a problem anymore.
Right now, we’d like to recommend you try a comprehensive-reliable and secure-effective way to improve your Windows 10 running speed and performance by using powerful free partition manager software - EaseUS Partition Master Free.

You can install this software on your PC and apply it to improve Windows 10 performance with its Cleanup and Optimization feature now: 

Download Now

 Windows 10 is supported

First. Clean up the computer to speed up Windows 10


Step 1: Launch EaseUS Partition Master. Select "Tools" and click "System Optimization".

choose system optimization

Step 2: Click "Junk File Cleanup". Then you can click "Analyze" to let EaseUS Partition Master find junk files on your PC.

choose junk file cleanup

Step 3: You can check and choose junk files and click Clean up. All of the selected junk files will be cleaned and deleted from your PC. Click "Yes" to clean up junk files.

Clean up junk files

Next. Optimize Windows 10 performance

You can also choose to optimize PC disk so to optimize your Windows 10 performance with these guidelines below:


Step 1: Install and launch EaseUS Partition Master. Select "Tools" and click "System Optimization".

choose system optimization

Step 2: Choose "Disk Optimization" to optimize your hard disk and improve the disk performance.

select disk optimization

Step 3: Select the partition that you want to optimize and click "Optimize". After a while, the defragment process completes. The time depends on the amount of the fragments on this partition.

optimize the disk

If you are facing such a problem on your Windows PC, relax, follow below-provided solutions to resolve them on your own now:

#1. C drive gets full with no reasons - two methods available

According to many Windows 10 users, it seems that 'C drive gets filled with no reason', 'C drive filling up for no reason' and 'C drive gets full automatically', etc. problems are a significant reason causing your PC slow.
So how to resolve this issue? Two solutions available to help:

1. Clear C drive useless files with free partition manager software
2. Manually disable system protection to save C drive space

The detail operating steps are available here now: Fix C Drive Gets Full Automatically Error. 
Notice: Cleaning up C drive will remove some saving files on your PC, remember to back up useful files in advance. 

#2. System Disk is running out of space in Windows 10 - Clear C drive/Add space to C drive

When the C drive is full and running out of space in Windows 10, 8 or 7, Windows system will slow down and warns users to resolve this issue. So how to fix such a problem? You may also have two solutions:

1. Add space to C drive/increase C drive space
2. Run DiskCleanup in Windows 10 top free up C drive space

One more thing that you should also notice is that the DiskCleanup will also remove files on your C drive. So please make sure that you’ve backup C drive files in advance.

#3. Windows 10 takes a long time to boot up - Speed up Windows 10 boot time/start time

When Windows startup time lasts very long on the computer, it’s also a Windows 10 slow issue. 
You can refer to Best 5 Free Tricks to Speed UP Windows Boot/Start Time for a guide now. 

#4. High CPU Usage in Windows 10

When the computer CPU is in a high usage situation, Windows 10 will inevitably become extremely slow. 
So how to fix this issue? 
You can follow to Clear Memory and Increase RAM to resolve Windows 10 slow with high CPU usage issue now. 

#5. 100% Disk Usage Error in Windows 10 Task Manager 

Another problem which may cause your Windows 10 computer extremely slow is 100% Disk Usage error in Task Manager.
And this is a top problem that many computer users may have encountered. For example, when you are running multiple programs and software on your PC, the computer will become slow and even stuck with no response. 
Right now, you can refer to this page to fix Windows 10 100% disk usage in Task Manager issue on your own now.