2. Click on Change PC Settings.  Then click on Personalize in the left pane. 3. In the right pane, click on Lock screen and then Browse to find your desired image. When you find the image you want, highlight the file by clicking on it, and then click on Choose Picture in the lower right-hand corner.
RenÃ© Descartes, (born March 31, 1596, La Haye, Touraine, Franceâdied February 11, 1650, Stockholm, Sweden), French mathematician, scientist, and philosopher.
Francis Bacon, also called Lord Verulam, was somewhat less renowned and less successful than Descartes, but nevertheless highly influential. Bacon advocated the collection of all possible facts and phenomena and the processing of these through a sort of automatic logical mill.