Why Am I Losing Storage on My PC With No Reason? 6 Fixes Here!

“Why am I losing storage on my PC?” If you also encounter the problems, follow this guidance to know what takes up space on PC. There are 6 ways to fix drive disk space full without reasons.

Posted by @Irene December 17, 2024 Updated By @Irene October 16, 2024

Storage is fundamental in computer usage, as it enables the retention of data, programs, and the efficient operation of the system. Nevertheless, there are instances where you may observe that your hard drive keeps losing disk space for no reason, even when you haven't added significant applications or a substantial amount of data like the following help-seeker:

Use case: Why am I losing storage on my PC without any reason?

   
   
   

Hello, I have a new laptop. On 17/08/19, C:\ had 85GB free space out of 117 GB total. Every week, it loses about 5GB of free space, and currently stands at 66.7 GB. I do not understand why free space should be lost. At this rate, the drive will fill up in 3 months. Why am I losing storage on my PC? Can someone please help?

 

Have you ever wondered why your computer's storage space disappears suddenly losing several gigabytes without any reason? When it happens, it is important to investigate and figure out the reasons behind this mystery, so we can find the right solutions. In the upcoming sections, we'll explore the factors causing this puzzling situation, then guide you to learn how to see what takes up space on PC. Afterward, you can follow the 6 effective ways to fix the problem that your computer keeps losing storage space.

Why is my disk space full without any reason?

C drive filling up automatically is an unexpected problem. When encountering that, users usually hope to know “Why do I have no space on my PC”? The main causes of this issue are typically:

Viruses and malicious software may continuously create files, filling up your system drive. • You might have saved large files on your C drive without realizing it. For instance, the default download folder is usually on the C drive. • The Protection feature regularly creates and stores system files in large system restore points, causing your hard drive to lose free space quickly. • Files like page files, remnants of old Windows installations, temporary files, and other system files could be taking up space on your system partition.

There could be more reasons why your C drive is mysteriously getting full. You can try the methods below to free up space on your C drive in Windows 11/10/8/7.

6 ways for fixing computer keeps losing storage space

After answering “Why do I have no space on my PC”, now, it is time to following the fixes to solve that. Here are 6 practical ways. 

Way 1. Check your software conflicts and virus infection

Did you install any suspicious programs from unknown sources or open strange email attachments recently? If yes, that may be one of the answers of "Why is my disk space full with no reasons". A virus could be eating up your hard drive space! When you see your drive space is full suddenly, you can scan for viruses before taking the next step.

Have good antivirus software installed, like Windows Defender. Keep it updated and run a thorough scan. Also, make sure your system is up to date to protect against viruses and malware. However, antivirus software will cause system conflicts. For smoother system running in the future, it is recommended to try the next method.

Way 2. Run PC Cleaner for cleanup

People who have used antivirus software may be familiar with the adverse effects like freezing or error code notices. To safely check and remove viruses, here we recommend a multifunctional tool, AOMEI Partition Assistant, which is designed for all Windows editions (11/10/8.1/8/7).

This tool can scan and clear various junk files, and easily remove system and registry clutter, enhancing security against viruses and malware. This tool will offer many solutions to help you fix computer keeps losing storage space problem.

Free download it with the following simple steps to fix losing storage on your PC.

AOMEI Partition Assistant

The Best Windows Disk Partition Manager and PC Optimizer

Step 1. Run the installed AOMEI Partition Assistant, and then click "Free up" > "PC Cleaner" from the top pane.

Step 2. In the pop-up window, click "Start Scan" to scan for potential viruses.

Step 3. Wait until the scanning process completes. If you want to stop, you can click the "Cancel Scan" button.

Step 4. When it is finished, all kinds of available junk files will be displayed. Then, choose the options you want to clean, then click "Clean All" to begin the cleaning process.

Step 5. When you see a correct symbol displayed in the interface, you can click "Back" to go to the main interface.

Way 3. Move large applications to another drive

If your storage space still is taken up after trying the above methods, you can try to move large applications to release space. However, moving programs isn't as straightforward as moving personal files like pictures or documents. Trying to copy and paste programs can mess up the boot file, causing those moved apps to not work properly when you try to use them.

AOMEI Partition Assistant allows you to easily transfer installed programs from one drive to another drive without data loss and boot issues. Once you upgrade to this version, you can use many other powerful features to fix computer problems.

Step 1. In the main interface, click "Free up" on the top pane and choose "App Mover".

Step 2. There are two options that you can choose in light of your needs. Here we click “App Mover”. You can also click “Move Folders” if you need to move folders from C drive to D drive.

Step 3. Then, select the C drive and hit "Next".

Step 4. Choose the target apps you want to move and select the destination location, then click "Move".

Step 5. In the pop-up window, you need to read the prompts. Click "OK" to begin the process.

Way 4. Extend drive space without data loss

There is another function worth trying with the powerful software. “Allocate Free Space” allows you to move free space from one drive to another, thus extending your drive space easily and without any risk of data loss.

AOMEI Partition Assistant

The Best Windows Disk Partition Manager and PC Optimizer

Step 1. Right-click on a partition that has enough space and select “Allocate Free Space” from the list.

Step 2. In the next window, preset the size of the free space you want to allocate and the target partition you want to allocate the free space to. When done, click on “OK”

Step 3. After returning to the home interface, hit “Apply” on the upper left and then, hit “Proceed” to start the space allocation.

Way 5. Remove hibernate files

"Why Am I Losing Storage on My PC?" In Windows, a substantial portion of your RAM is use to accommodate the hibernation file. When your computer's RAM clocks in at a generous 8 gigabytes, the hibernation file (referred to as hiberfil.sys) stakes its claim at approximately 4 gigabytes. It might be among the contributing factors to the problem of C drive disk space full without reasons.

Step 1. Open the Start menu, type "cmd," right-click on Command Prompt, and pick "Run as administrator."

Step 2. Type "powercfg.exe / hibernate off" and press Enter.

This should give you more free space on your system drive.

Way 6. Show hidden files or folders

How to see what takes up space on PC? Maybe there are many hidden files or folders on your device but you do not notice them. You can also uncover hidden files and folders that could be eating up space on your drive space. Once you find them, you can delete these files and folders if they are useless.

Step 1. Go to "Control Panel," then click on "File Explorer Options." Next, click the "View" tab and tick the box that says "Show hidden files, folders, and drives."

Step 2. Then back to the drive that's causing the trouble. See if any hidden things are hogging space. If you don't need them anymore, say goodbye by deleting them.

Tip: How to upgrade your disk easily?

If there is still not enough space on the disk in Windows computers, you can also choose to upgrade a larger disk. The powerful AOMEI Partition Assistant allows you quickly and easily transfer the entire system drive or only migration of the operating system to another SSD/HDD without reinstallation. Additionally, its secure boot feature ensures successful booting from cloned drives.

Step 1. Install and launch AOMEI Partition Assistant, click "Clone" in the main interface, and select "Clone Disk".

Step 2. Choose the hard disk that you need to clone as the source disk and click "Next".

Step 3. Select the destination disk to store the data on the source disk, and then click "Next".

Step 4. Then, you can check the source and destination disk in the next window or change to "Sector to Sector clone", and click the "Confirm" button to continue if there is no problem.

Here, you can also click the "Settings" button to adjust the partition size on the destination disk or tick "4k alignment" to optimize performance of SSD.

Step 5. After returning to the main interface, check the pending operation and click "Apply" and "Proceed" to commit the operation.

If you are cloning the system hard drive to another hard drive, to successfully boot from the destination hard drive and avoid the embarrassing moment that cloned SSD won’t boot, please do as below:

Step 1. Restart your computer, long press the "F2" key (perhaps other keys like DEL), and access the BIOS environment.

Step 2. Change the boot order and set the cloned hard drive as the first boot drive in BIOS.

Step 3. Press "Enter". Now you should boot the computer from the cloned hard disk successfully.

Summary

With the user case “Why am I losing storage on my PC”, we share 6 easy and practical solutions for the problem. If you want to further troubleshoot the problem, it can offer various solutions, you can also try to explore the features of Merge Partitions, Remove Duplicate Files, and Wipe Partition.

For other computer issues-solving, functions like Migrate OS to SSD and Convert System Disk between MBR/GPT are also popular among users. If you are a Windows Server user, here is the Server Edition that can be chosen.