What does ctrl f11 do?

if you turn your laptop of and turn it back on press f11 it will take approx 10 mins an all the viruses and files will have been deleted an you computer will be brand new again but make sure you save all files you want to keep like e.g Microsoft Word office power point music photos videos all the stuff ud like to keep and then turn it of an on and press f 11 an once you done that type in nesercery details and start to upload all the files uv save to your USB stick