I am helping a friend clean viruses off her tablet. After about 4 hours of Skype screen-sharing, going through regedit and other obscure locations as well as scanning and cleaning her system with multiple antivirus software (avast and malwarebytes), it seems we've fixed just about everything. One thing remains, when she starts up her system, she spots disk setup (probably disk management) open up and then close quickly. I have searched for something like this online but I have no luck.