I use windows 7. I want to upgrade to windows 10 but there is this virus without a trace. Everytime I open my browser, there are ads all over refreshing every minute. These ads open in new tabs, every time i refresh a tab or open a new one. Please tell me how to get rid of this- I can't find it in control panel as a program or as extension or anywhere in C drive. And the files i find as saveenshare, I am unable to delete. Is there any way to delete the virus without formatting C? If I upgrade would it transfer to the new chrome? Please help.