Hi guys, been a while! Still loving my Surface but unfortunately ran into a problem this week, got bitten badly by a virus called Groovorio Tried removing from add/remove... still there. Tried deleting from browsers... still there. Tried a refresh... still there. Tried a complete reinstall... still there. Eventually got rid of it, but now I have lag in my browsers, with both scrolling and typing. It's driving me insane! I reckon it's still in my system somewhere. Defender finds nothing... So, how do I perform a properly 'complete' refresh. I'm aware the complete reinstall showed on the options on the Surface isn't equal to an old 'format c:\' because when I load back up it keeps all my wallpapers etc. Something to do with booting from a USB? Would appreciate a hand thanks.