To do this as safely as possible, you should visit a website called Dll-files.com, search for the exact name of your missing file and download it . Once you’ve downloaded the item, extract the archive (it’s usually a ZIP file) and copy the DLL into a folder called System located within the Windows folder.

These include being able to scan several disks one after the other and making it easier for less experienced users to run a scan and optional fix. Here are four that work on Windows 10 and most other recent versions of Windows. When a device connected to your PC malfunctions, you will get an error code specific to device failure.

• Check out Austin’s earlier article on How to Check if Your Computer’s Hard Disk Drive is Badin Windows 7 and Windows 8 to see some of these tools.
• The registry might contain leftover files from programs you don’t use anymore.
• In this case, you usually have to make a decision about which security software you’ll be using.
• First things first, disable real-time protection from Windows Security.
• My name is Madhur TJ and I’m a Computer Hardware Engineer and I love to teach about how you can fix your computer on your own by reading some helpful articles.
• Problems in a master boot windows 10 winsta.dll record, a boot sector, and a boot configuration data store can be fixed by this tool.

Even if the scan fails to find anything, some users have reported that their PC’s functionality improved after running it. Windows Defender comes pre-installed on all Windows 10 systems. It’s included to protect you from cyber threats like malware, hackers, and more. Windows 10 does not come with McAfee, but instead the proprietary Microsoft antivirus software called Windows Defender. Just because Windows 10 needs antivirus doesn’t mean you have to spend money on third-party software.

Way 5: Undelete DLL Files via System Restore

To permanently disable Windows Defender Antivirus, you need to use the Group Policy Editor or the corresponding registry setting. Note that you must disable the Tamper Protection feature in Windows Security Center before making changes. If you don’t, Windows Security Center may enable Windows Defender antivirus again. Some Windows users are not familiar with the fact that they don’t have to manually turn off the native antivirus protection. If you install third-party anti-malware software, Microsoft Defender Antivirus will be deactivated by default.

To edit a Windows registry offline, you must first book into WinRE and open the command prompt from there. To do that, you have a couple of different ways depending on if you can get into Windows now and if you have Windows installation media or not. If you need to examine or modify a Registry entry, the Registry Editor utility gives you a hierarchical, treelike view of the entire Registry database. And the Regedit.exe or Regedit32.exe utilities should be left to experienced administrators or programmers only. Even if you need to change something in the Registry, first test the effects of these changes in a test lab.

The screenshot below shows confirmation of successful drive letter removal. At the prompt type list volume to display the volume list and confirm letter removal. At the prompt type remove letter x to remove the previously assigned drive letter.

How To Run SFC Scannow in Windows

If you need to back up any other files, consider cloning your hard drive. You don’t need to back up your hard drive when editing the registry, but it’s always good to have a backup of your drive in an emergency. Should anything go wrong, you can import the backup by opening the register editor , clicking File, selecting Import, and choosing the backup file you just created. We recommend backing up your registry before running any third-party registry cleaning tools . The granular nature of registry values means you can customize your experience far beyond what’s possible in the normal settings menu. In fact, if you’re an expert user, you can edit the Windows registry to try to speed up your PC. Registry keys are containers that act like folders, with values or subkeys contained within them.

Sample files

Also, consider switching to a different third-party antivirus. Unlike Windows Defender, third-party antivirus tools offer advanced features that many users will find useful, such as online banking protection and privacy insurance.