Since QuantV typically doesn't come with an uninstaller, you must remove its files manually.
If you suspect Q.U.A.N.T.V. behaved maliciously—unexpected network traffic, pop-ups, or repeated reinstalls—scan with a reputable anti-malware tool and review recent installation history. If the program was part of a bundle, consider reviewing installation habits: next time, use custom install and uncheck extras. How To Uninstall Quantv