Many of the top antivirus providers offer a free bootable rescue disk for disinfecting your system after an infection. These are tools based on Linux that can be used to clean the computer of malware if it won’t boot up or cannot be scanned by a standard antivirus program running on Windows. I suggest the Kaspersky disc for its simplicity of use (though it may not work on certain Dell systems).
If you prefer, you can pick up a similar range of features from the Avira and https://totalavantivirusreview.com/ ESET rescue disks which also come with a graphical user interface but require either a CD or USB device to start. Both options can search for and decipher any malware on your computer. However, their virus definitions may not be updated as frequently as Rescue Disks that are Linux-based.
The Trend Micro Rescue Disk is another good choice. It’s also one of the smallest disks on this list, at around 70MB. It doesn’t come with a graphical interface, but it’s fast and has various options for customization. It is able to mount specific files and drives, or even individual folders.
You can also get a reliable virus scan with the Comodo rescue disk although it’s not quite as flexibility of the Linux-based options mentioned above. It is, however, an efficient tool for detecting and deleting the types of viruses that can hide themselves in Windows files, preventing detection by normal antivirus programs. You can choose to use either a text-only or full-graphic interface. You can also perform a smart scan, or a custom scan.