That's an option, but not realistic for an end user. It's something the virus removal specialist might try ;)

>before going that drastic, I'd try removal with a toolset booting from linux (unless that already failed) - after back up of user files, which should be first IAC.
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>>If you know you had malware and thought you got rid of it, then clearly you didn't. Which means it's advanced and persistent, probably with a rootkit, RAT, keylogger etc. In that case you only have a few realistic options:
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>>1. Take it to a virus removal specialist. They may be able to remove it without wiping your computer, but be aware that some commercial antivirus removal services will wipe your computer and restore it to its original factory condition, deleting all your files and programs. Without a complete wipe you can never be 100% sure the infection is gone (and sometimes not even then - see below)
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>>2. Windows 10 has some new recovery features e.g. "reset" but my gut feel is they won't be effective against an advanced threat: http://windows.microsoft.com/en-ca/windows-10/windows-10-recovery-options
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>>3. Back up your user files, then completely wipe the computer and reinstall Windows and all your programs and files
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>>It's worth noting that some very advanced malware persists even across disk wipes, by embedding itself either in the system BIOS or in the firmware of disk devices.