How Do I Optimize Windows 10 for Best Performance?

How do I optimize Windows 10 for best performance when Windows 10 performance regresses? This tutorial will give you the solutions, both for HDD and SSD.


By Dervish / Updated on May 12, 2023

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About how to optimize Windows 10 for faster performance

There have been a lot of user reports lately that their Windows 10 PC is getting slower and slower.

Indeed, Windows 10 performance slowdowns are annoying and frustrating. Whether for work or leisure, Windows 10 running slowly always affects our mood. That's why so many users search how do I optimize Windows 10 for best performance on Google.

Generally speaking, what causes poor Windows 10 performance are as follows:

✦Attacked by a virus or malware

✦Dust accumulated inside the machine

✦Disk has bad sectors

✦Junk files

✦Insufficient system disk space

✦Too many fragmented files

✦HDD throttling or aging

✦SSD partition is not 4K aligned


For these problems, you can find a lot of solutions on the forum, for example, scan the disk for threat programs, clean the dust inside the case, change Windows 10 settings, etc. But you will find that many measures cure the symptoms, not the disease. If you want to learn how to make Windows 10 run peak performance, please read on.

How to improve Windows 10 performance effectively

To make Windows run faster, the best disk optimizer on Windows 10 is necessary. What is the best optimizer for Windows 10? Here, I recommend you to try AOMEI Partition Assistant Standard (compatible with Windows 11, 10, 8, 7).

This is a powerful all-in-one disk optimization expert, providing multiple effective measures to stimulate the best performance of Windows, suitable for HDD and SSD users. Most importantly, it has a friendly graphical user interface, and each operation function is also very convenient.

Download Freeware Win 11/10/8.1/8/7/XP
Secure Download

How do I optimize my computer for best performance? You can download it and refer to the following solutions.  

▶ Option 1. Check bad sectors and fix it

A bad sector is an inaccessible or unwritable sector on a hard drive or flash drive. Bad sectors will affect the performance of the disk, so it is necessary to remove bad sectors from hard disk permanently!

Step 1. Install and run AOMEI Partition Assistant Standard. Right-click the partition you want to check and select “Advanced” > “Check Partition”.

Advanced Check Partition

Step 2. In the pop-up window, select the way of checking errors to perform. There are three choices, and here we choose the first one “Check partition and fix errors in this …”. Then, click “OK” to continue.

Check Partition And Fix Errors

Step 3. After that, you will see the window below. After the progress is completed, click “OK”.

Check Partition

▶ Option 2. Clean up junk files

In addition, insufficient space on the C drive will also affect the performance of Windows 10. Fortunately, we can clean up system junk files and registry junk files to free up space.

Step 1. In the main interface, click“PC Cleaner” under ”Free up”.

Free Up Space

Step 2. Then, click “Start Scan” to find the junk files on the PC. Wait a moment, you will see that all junk files will be listed. You can click "Select all" and then "Clean all".

After Scanning

Step 3. After cleaning up, you will see the target junk files have been removed successfully.


▶ Option 3. Run disk defrag

Disk defrag can rearrange the discontinuous data on the sector to make it continuous, so that the disk can work more efficiently.

Warning: Since HDD are constructed differently than SSD, please do not perform SSD defrag.

Step 1. Right-click on the target disk and select “Disk Defrag”.

Disk Defragmenter

Step 2. Tick the disk you want to defrag and hit the “Analyze” button.


Step 3. After the process is over, the disk will be scored based on the fragmented rate.


Step 4. Hit the “Defrag” button to start the defragmentation.

▶ Option 4. Extend the C drive

As we all know, insufficient system drive space (usually C drive) will affect the performance of Windows. We need to make sure it has enough space to run Windows 10.

After upgrading to AOMEI Partition Assistant Professional, you can easily and quickly allocate the space of D drive to C drive.

Download Demo Win 11/10/8.1/8/7/XP
Secure Download

Step 1. Right-click D drive and select "Allocate Free Space".

Allocate Free Space

Step 2. In the pop-up window, we could specify the free space to be allocated and the destination partition that the free space will be added to.

Allocate Freom D to C

Step 3. Click "Apply" on the toolbar to execute pending operations.


▶ Option 5. Upgrade HDD to SSD

Since the read and write speed of SSD is faster than HDD, replacing hard drive with SSD allows Windows to perform the best performance. AOMEI Partition Assistant Professional can migrate all data from HDD to SSD without reinstalling, including Windows OS.

Step 1. Find "Clone Disk" in "Clone" menu and click it.

Copy Wizard

Step 2. Choose a disk clone method, “Clone Disk Quickly” is recommended.

Clone Disk Quickly

Step 3. Choose the disk you want to clone.

Source Disk

Step 4. Select the target disk you will clone into.

Target One

Step 5. You can adjust the size of the partition on the SSD. If you don’t need to, just click “Next”.


Step 6. You can preview the disk cloning operating by viewing the "Pending Operations". Don’t forget to click "Apply" and "Proceed".


▶ Option 6. SSD 4K alignment

SSD use the smallest 4K sectors in the file system to hold data, and if the smallest 4K allocation unit is not always aligned with the 4K pages in the SSD, then the performance of the SSD will suffer. 4K partition alignment can make SSD have stronger performance.

Step 1. Right-click the partition you want to align and select Advanced > Partition Alignment.

Partition Alignment

Step 2. In the pop-up window, select 4096 sectors from the given list and click OK.

4K Alignment

Step 3. Click Apply > Proceed to execute the operation.


▶ Option 7. SSD secure erase

Secure Erase ensures that all data stored on the SSD storage device will be completely erased, and the SSD will then reach its original ideal performance level.

In the top panel of AOMEI Partition Assistant, click "SSD Secure Erase" under "Wipe" menu and click "Next".

SSD Secure Erase


How do I optimize Windows 10 for best performance? After reading this tutorial, I believe you already have the answer. This article shares 7 ways to speed up Windows 10 for you, each method is tested. Please choose the one you think is best for you.

Dervish · Staff Editor
Dervish is an English editor of AOMEI Technology; He is delicated to offering users easy and effecitve solutions for issuses related to disks and partitoins. In his spare time, he enjoy wathcning films, playing footable, traveling and so on.