To protect your computer against viruses and malware, you should make sure your system is up to date. Then you should start to run a clear scan. At least, you should have Windows Defender and update it to the latest version. You should have good anti-virus software installed. When you notice C: drive is full, you should first do a virus scan before wondering what you can delete. Having realized the reasons for the 'my C drive is full' issue, it's time to learn how to fix it. Solutions to C: drive full without reasons Windows 11, 10, 8, 7
You can use one or more of the methods below to clean up C: drive space in Windows 11/10/8/7. There might be more reasons behind C: drive mysteriously full. ▪ Pages files, previous Windows installation, temporary files, and other system files may have taken up the space of your system partition. For example, the default download folder is located in C: drive. ▪ You may have saved large files to C: drive that you are not aware of. ▪ Viruses and malware may keep generating files to fill your system drive. Therefore, you need to fix this problem as soon as possible.
What’s worse, it may result in a system crash.
When the system drive is in low disk space, some programs may not work properly. You may also receive a Low disk space warning. Many Windows users have this problem: “My C: drive is full without reason”.