Windows 10 Slow Suddenly! Effective Fixes Here to Speed Up Windows 10

Brithny updated on May 07, 2020 to Partition Manager | How-to Articles

Why is Windows 10 so slow? Why is your PC or laptop running slow Windows 10? Try the efficient methods in this tutorial to troubleshoot.

Workable Solutions Step-by-step Troubleshooting
Why is Windows 10 so slow Your computer was running for a long time without a reboot, not enough free hard drive space...Full steps
Quick tips on Windows 10 slow Reboot your computer, scan for malware or viruses, close background programs, update Windows...Full steps
Advanced fixes to Windows 10 slow Delete temp files, free up Windows 10 disk space, erase computer and start over...Full steps
FAQs about Windows 10 slow How to speed up Windows 10? Why is Windows 10 so Slow? How to stop Windows 10 from lagging...Full steps

Windows 10 Running Slow all of a Sudden

"I've had this PC for about 1.5 years now, and it's always worked fine and fast. Then about a week ago, it started being very slow suddenly; whether it's opening an app or right-clicking, it's just very slow. Nothing was installed, and prior to then, everything I did was routine. It is very weird. Why is my Windows 10 running slow all of a Sudden? Please let me know if you have any ideas on what I can do next!"

Why Is Windows 10 So Slow

How often do you feel frustrated with your computer acting up, being slow, or freezing up? This list does not cover all the reasons, but when it comes to personal computers it should give you a head start on understanding what causes slow performance specifically for Windows-based machines. Here are some common reasons why Windows 10 running slow.

  • Your computer was running for a long time without a reboot
  • Not enough free hard drive space
  • Hard drive corrupted or fragmented
  • The computer is infected with a Virus or Malware
  • Hardware conflicts and outdated drivers
  • Too many background programs
  • Computer or processor is overheating
  • Your version of Windows (or any other platform you may be using) or other software is out of date
  • Hardware failure
  • The computer is too old...

Quick Fixes for Windows 10 Running Slow and Unresponsive Issue

Now that you have known the reason why your computer running slow Windows 10, you can follow the quick fixes to solve your problem and speed up your PC or laptop.

Method 1. Reboot your computer

If your computer has not been rebooted recently, make sure to reboot it before following any of the fixes below.

Method 2. Scan for malware or viruses

If your computer is infected with one or more viruses, this can cause your computer to run slow. Use your antivirus software to scan your computer. You can also try to remove the virus without using antivirus software 

  • Run the Windows Command Prompt with the Admin privilege.
  • Type the command: attrib g:*.* /d /s -h -r -s and hit Enter. (Replace the drive letter g with your own external hard drive's drive letter.)

Method 3. Close background programs

One of the most common reasons for a slow computer is programs running in the background. Remove or disable any TSRs and startup programs that automatically start each time the computer boots. To see what programs are running in the background and how much memory and CPU they are using, open Task Manager. Choose the one and close.

Method 4. Update Windows 

Make sure that you have the latest Windows updates installed on your PC. If you are on the Internet when your computer is slow, make sure all browser plugins are up-to-date.

Advanced Solutions to Computer Running Slow Windows 10 

If the quick fixes fail to solve the computer or laptop running slow Windows 10, follow the advanced methods below to try out and speed up Windows 10.

Fix 1. Delete temp files

As a computer runs programs, temporary files are stored on the hard drive. Deleting these temp files can help improve computer performance. You can use Disk Cleanup to delete temp files, and you can also automatically delete temp files.

Fix 2. Free up Windows 10 disk space and increase C drive

For some serious hard drive issues that might cause a hard drive overloaded and sluggish, you need the advanced help of professional toolkits! Here, EaseUS Tools M is recommended. Use it to clean up all the junk files at once for more free space.

1. Clean up junk files

Step 1. DOWNLOAD and install EaseUS Tools M. Select "System Cleanup" on the main screen.

click system cleanup

Step 2. Select the type of junk files you want to scan and click "Analyze".

analyze junk files

Step 3. Identify and select useless files and click "Clean up" to remove those files from your PC or laptop.

click clean up to remove junk files

2. Increase system C drive

If cleaning up junk files doesn't make too much free space for you, another effective solution to Windows 10 suddenly very slow problem is to simply expand your C drive with EaseUS Partition Master Free. Do it with the following steps.

Download Now

 Windows 10 is supported

Step 1: Launch EaseUS Partition Master

Run EaseUS Partition Master

Step 2: Add space to the System C drive

1. Shrink partition and leave unallocated space for extending C: drive:

  • Right-click on a partition next to the C: drive and select "Resize/Move".
  • Drag the end of the partition that is next to the C: drive and shrink it, leaving unallocated space next to the system C: drive, and click "OK".

2. Right-click on the System C: drive and select "Resize/Move".

Extend System partition

To add space to the C: drive, drag the system partition end into the unallocated space.

Add space to C drive

Step 3: Confirm to extend system C drive

Click the "Execute Operation" button, it will list the pending operations, and click "Apply" to execute the changes and extend the C drive.

Confirm to extend system C drive
Download Now

 Windows 10 is supported

Fix 3. Erase computer and start over 

If none of the above solutions resolve your issues, another option is to either reinstall Windows or erase everything and then start over.

Erasing everything and starting over can increase performance by getting rid of old software or drivers that may be on the computer and causing the computer to be slow. Installing a fresh copy of Windows, software programs, and the latest drivers help verify there are no software related issues causing your computer to be slow.

Notice: Do remember back up data before you take action to erase data.

Windows 10 Slow FAQs

Let's take a look at the three hot questions that users are most concerned about Windows 10 slow problem.

How can I speed up my computer with Windows 10?

How to speed up Windows 10? Try effective solutions below. 

  • Restart your PC
  • Install the latest Windows 10 update
  • Change the power plan
  • Disable startup programs
  • Defragment and optimize drives
  • Use ReadyBoost to speed up Windows 10
  • Run Disk Cleanup
  • Extend system C drive
  • Adjust the appearance and performance of Windows
  • Disable Transparency Effect
  • Upgrade your RAM
  • More...

How do I stop Windows 10 from lagging?

  • Go to "Settings". Click "Update and Security".
  • Go to Windows Update and click "Advanced options".
  • Click on "Delivery Optimization", then choose "Choose how updates are delivered".
  • Turn off "Updates from more than one place".

How do I find out what is slowing down my computer?

Why is Windows 10 so Slow? There may be the following reasons:

  • Virus or malware attack
  • Slow on startup
  • Run out of disk space
  • Dirty fan or heat sink
  • Windows system issue
  • Hard drive issue
  • Virtual memory not enough
  • ...
 
 

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Frequently Asked Questions

Why Choose EaseUS Partition Master?

"I've used Partition Master Professional many times to create, delete, format, move, rename, and resize partitions."PCWorld

"Partitioning tools have come a very long since the days of complicated command line utilities and EASEUS Partition Master is one of the most advanced programs available."TECH ADVISOR

"I love that the changes you make with EaseUS Partition Master Free aren't immediately applied to the disks. It makes it way easier to play out what will happen after you've made all the changes."Lifewire

Will the "Migrate OS" feature transfer the Windows system files only or the whole C drive?

To ensure that the migrated system will boot normally, the Migrate OS feature will transfer all the files in the system and the boot partitions. Generally, the boot partition is the C drive so the transfer will include all the files in C.

Does EaseUS Partition Master license apply to multiple computers?

The license of Partition Master Professional and Server editions can be used on 1 computer only, while that for for the Technician and Unlimited editions can be used on multiple machines.

What is the difference between EaseUS Partition Master Trial version and the Free version?

Free is for home users only, with most basic functions available such as partition resize and clone. While trial can help you understand how this product works and test what a full license can do on a business or server OS machine.

Will it cause any data loss after resizing the partition in EaseUS Partition Master?

Generally, it will not cause any data loss or boot issue by resizing a partition. However, in order to protect your data, we suggest that you backup the partition before resizing, in case of any unexpected situations such as power outages, computer hardware failures, etc. You can use EaseUS Todo Backup to backup the partition and its trial version is fully functioned for 30 days.

What should I prepare before resizing the partition?

On the partition that is going to be operated, there might be some files being occupied by other programs. To ensure a successful operation, we suggest that you close all the unnecessary software before resizing that partition. Otherwise, EaseUS Partition Master will detect the partition being locked by the other software and require a reboot to resize the partition under boot mode.

About EaseUS Partition Master

All-round disk & partition management software for personal and commercial use. Let it manage your storage drive: resize, format, delete, clone, convert, etc.