Why Removing Useless Files Is Strongly Advised for Faster PC Performance

Accumulated useless files on your personal computer can significantly degrade system performance. That’s why removing useless files is strongly advised for a faster, smoother computing experience. Read this guide to learn how to delete useless files from your PC now!

Gia

By Gia / Updated on May 23, 2025

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Why Removing Useless Files is Advised

Over time, your computer accumulates a large number of files. While many are essential, a significant portion eventually becomes "useless." These include temporary files, old system logs, leftover data, duplicate files, and more. At some point, the "removing useless files is advised" message pops up, which indicates your PC’s performance is starting to drop.

Removing useless files brings several key benefits:

Free Up Disk Space: Useless files can take up gigabytes of space. When your C: drive is too full, your system doesn’t have enough room to work efficiently.
Boost System Speed and Responsiveness: A cluttered drive makes it harder for your system to find the files it needs, which slows everything down.
Reduce System Overhead: With fewer unnecessary files, tasks like virus scans, disk indexing for search, and system backups complete much faster. 
Prevent System Errors: Old or corrupted files can cause software errors, system instability, or even crashes.

In short, removing useless files is strongly advised to help your PC run faster and more smoothly.

How to Remove Useless Files from a Computer

Now that you understand why it's so important, let's dive into how to remove useless files from a computer. There are several methods available. Select the one that best suits your needs.

Method 1. Delete Useless Files Using Software

For a comprehensive approach to cleaning your PC, using specialized software is highly recommended. AOMEI Partition Assistant is a powerful and versatile disk management tool that offers robust features to help you delete useless files and optimize your PC's performance. It is designed to scan and remove useless files safely and efficiently. Furthermore, its ability to identify and help you manage large files can free up significant chunks of space you might not even know were being wasted.

Why use AOMEI Partition Assistant?
Safe and Accurate Scanning: Performs a thorough scan without deleting essential system files, ensuring your PC runs smoothly and safely after the cleanup.
Comprehensive Disk Management: Offers multiple options to optimize disk space, including resizing partitions, allocating free space, and upgrading to a larger disk.
User-Friendly Interface: Features a clean and intuitive interface, making it suitable for all users.
Wide Compatibility: Works seamlessly on Windows 11, 10, 8.1, 8, and 7, making it a versatile solution for most PC users.

Here's how to use AOMEI Partition Assistant to remove useless files from a PC:

➤ Remove Junk Files

Step 1: After installing AOMEI Partition Assistant on your PC, launch it and go to Free up > PC Cleaner.

PC Cleaner

Step 2:  In the pop-up window, click Start Scan to scan for junk files.

Start Scan

Step 3: After the scan process is completed, System Junk Files and Registry Junk Files will be listed. By default, all System Junk Files are ticked. Depending on your needs, tick the options you want to clean, and then click Clean All to start the cleaning process.

Clean All

Step 4: The cleaning process will start, and the selected files will be cleaned up.

Result

➤ Remove Duplicate Files

In addition to removing junk files, AOMEI Partition Assistant also offers a Duplicate Files Finder feature. This tool helps you quickly find and delete duplicate files in bulk, freeing up even more disk space. Here's step-by-step guide:

Step 1: Install and launch AOMEI Partition Assistant. Then click Free up > Duplicate Files Finder.

Duplicate Files Finder

Step 2: By default, all hard drives and partitions on your computer will be displayed. You can manually adjust the scan range and file types. Then Click Scan.

Start Scan

Step 3: Once the scan is complete, all duplicate files that meet the conditions you set will be displayed. You can click the Preview button to view the duplicate file details.

Preview

Step 4: You can set up a delete method and personal preferences in Settings

Move to Recycle Bin

Then manually delete unnecessary ones. Normally, it is recommended to keep at least one duplicate file. 

Start Manual Delete

Method 2. Enable Storage Sense on Windows

Windows comes equipped with a tool called Storage Sense. This feature can automatically free up space on your computer by deleting unnecessary files, such as temporary files and content in your Recycle Bin.  

Here’s how to remove useless files enable Storage Sense on Windows:

Step 1: Press Windows + I to open the Windows Settings menu.

Step 2: Then click System > Storage.

Step 3: Turn on Storage Sense.

Configure Storage Sense or Run It Now

Step 4: You can click the "Configure Storage Sense or run it now" option to customize when and how often Storage Sense should run and what types of files it will delete.

Set Time

Tips: While Storage Sense is convenient for automatically deleting certain files, it offers limited control over what gets removed. You might accidentally lose important files, such as those in the Recycle Bin or Downloads folder. Always double-check the settings before enabling or adjusting them.

Method 3. Run Disk Cleanup Utility

Alternatively, you can run Disk Cleanup to identify and remove a variety of temporary and unnecessary files from your PC. It allows you to see exactly what types of files are taking up space and make informed decisions about their removal.

Here's how to use the Disk Cleanup utility to delete useless files:

Step 1: Right-click the drive you want to handle and select Properties.

Step 2: Click the Disk Cleanup button in the disk properties window.

Step 3: Select the files you want to delete and click OK.

C Drive Cleanup

Tips: Like Storage Sense, Disk Cleanup only targets basic system junk. It does not detect deeper clutter, third-party application leftovers, or duplicate files.

Pro Tips to Boost PC Performance

While removing useless files is advised and forms a crucial foundation, several other practices can further enhance your PC's speed and responsiveness:

✔️ Uninstall Unnecessary Programs: Go to Settings > Apps > Apps & features and remove any software you no longer use. Alternatively, move installed programs to another drive with sufficient storage. 

✔️ Disable Startup Programs: Many applications configure themselves to run at startup, consuming resources and slowing down your boot time. 

✔️ Run Disk Defragment (HDDs Only): If you have a traditional HDD, defragmenting it can improve file access times. 

✔️ Upgrade to an SSD: If your computer still uses an HDD as its primary drive, consider upgrading to an SSD for better performance.

Summary

In conclusion, the accumulation of useless files can significantly reduce PC performance. That’s why removing these files is strongly advised. In this guide, we’ve explored several effective methods to remove useless files from your computer. Use these techniques to clean up your device, and your PC will thank you for it!

Gia
Gia · Staff Editor
Gia is an editor of AOMEI Technology. She possesses comprehensive expertise in resolving common computer challenges. Her methodical training equips her to craft articles that have provided indispensable guidance to countless users grappling with technical issues.